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4649748981 = 314913617643
BaseRepresentation
bin1000101010010010…
…11000100111110101
3110000001022201111020
410111021120213311
534010313431411
62045220131353
7223140133323
oct42511304765
913001281436
104649748981
111a76731259
12a99236b59
13591418377
1432176ad13
151c331d606
hex1152589f5

4649748981 has 16 divisors (see below), whose sum is σ = 6246676800. Its totient is φ = 3076363520.

The previous prime is 4649748979. The next prime is 4649749009. The reversal of 4649748981 is 1898479464.

It is a cyclic number.

It is not a de Polignac number, because 4649748981 - 21 = 4649748979 is a prime.

It is a super-2 number, since 2×46497489812 = 43240331172621076722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4649748281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604546 + ... + 612188.

It is an arithmetic number, because the mean of its divisors is an integer number (390417300).

Almost surely, 24649748981 is an apocalyptic number.

It is an amenable number.

4649748981 is a deficient number, since it is larger than the sum of its proper divisors (1596927819).

4649748981 is a wasteful number, since it uses less digits than its factorization.

4649748981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156.

The product of its digits is 13934592, while the sum is 60.

The square root of 4649748981 is about 68189.0678994808. The cubic root of 4649748981 is about 1669.0774998796.

The spelling of 4649748981 in words is "four billion, six hundred forty-nine million, seven hundred forty-eight thousand, nine hundred eighty-one".

Divisors: 1 3 149 447 1361 4083 7643 22929 202789 608367 1138807 3416421 10402123 31206369 1549916327 4649748981