1630160261 has 8 divisors (see below), whose sum is σ = 1645749144. Its totient is φ = 1614592000.

The previous prime is 1630160249. The next prime is 1630160263. The reversal of 1630160261 is 1620610361.

It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 1608491236 = 4655^2 + 40106^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1630160261 - 2¹⁴ = 1630143877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1630160261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630160263) 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, 187511 + ... + 196011.

It is an arithmetic number, because the mean of its divisors is an integer number (205718643).

Almost surely, 2^1630160261 is an apocalyptic number.

It is an amenable number.

1630160261 is a deficient number, since it is larger than the sum of its proper divisors (15588883).

1630160261 is a wasteful number, since it uses less digits than its factorization.

1630160261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1630160261 is about 40375.2431695464. The cubic root of 1630160261 is about 1176.9104905070.

The spelling of 1630160261 in words is "one billion, six hundred thirty million, one hundred sixty thousand, two hundred sixty-one".