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1630261423 = 71051322153
BaseRepresentation
bin110000100101011…
…1101000010101111
311012121121212020201
41201022331002233
511314321331143
6425434054331
755253664520
oct14112750257
94177555221
101630261423
1176727059a
12395b7a3a7
131cc99ca3b
14116730847
15981ca64d
hex612bd0af

1630261423 has 8 divisors (see below), whose sum is σ = 1863417248. Its totient is φ = 1397170944.

The previous prime is 1630261363. The next prime is 1630261441. The reversal of 1630261423 is 3241620361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1630261423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1630261391 and 1630261400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630261823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62515 + ... + 84667.

It is an arithmetic number, because the mean of its divisors is an integer number (232927156).

Almost surely, 21630261423 is an apocalyptic number.

1630261423 is a deficient number, since it is larger than the sum of its proper divisors (233155825).

1630261423 is a wasteful number, since it uses less digits than its factorization.

1630261423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32673.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1630261423 is about 40376.4959227519. The cubic root of 1630261423 is about 1176.9348349757.

Adding to 1630261423 its reverse (3241620361), we get a palindrome (4871881784).

The spelling of 1630261423 in words is "one billion, six hundred thirty million, two hundred sixty-one thousand, four hundred twenty-three".

Divisors: 1 7 10513 22153 73591 155071 232894489 1630261423