1262538961 has 8 divisors (see below), whose sum is σ = 1329332000. Its totient is φ = 1195780320.

The previous prime is 1262538941. The next prime is 1262538989. The reversal of 1262538961 is 1698352621.

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 1262538961 - 2⁵ = 1262538929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1262538941) 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, 106090 + ... + 117388.

It is an arithmetic number, because the mean of its divisors is an integer number (166166500).

Almost surely, 2^1262538961 is an apocalyptic number.

It is an amenable number.

1262538961 is a deficient number, since it is larger than the sum of its proper divisors (66793039).

1262538961 is a wasteful number, since it uses less digits than its factorization.

1262538961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17199.

The product of its digits is 155520, while the sum is 43.

The square root of 1262538961 is about 35532.2242619288. The cubic root of 1262538961 is about 1080.8072842194.

The spelling of 1262538961 in words is "one billion, two hundred sixty-two million, five hundred thirty-eight thousand, nine hundred sixty-one".