1295274816 has 84 divisors (see below), whose sum is σ = 4050206784. Its totient is φ = 392505600.

The previous prime is 1295274811. The next prime is 1295274823. The reversal of 1295274816 is 6184725921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295274811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95880 + ... + 108551.

Almost surely, 2^1295274816 is an apocalyptic number.

1295274816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1295274816 is an abundant number, since it is smaller than the sum of its proper divisors (2754931968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1295274816 is a wasteful number, since it uses less digits than its factorization.

1295274816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204460 (or 204447 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 1295274816 is about 35989.9265906448. The cubic root of 1295274816 is about 1090.0689617733.

The spelling of 1295274816 in words is "one billion, two hundred ninety-five million, two hundred seventy-four thousand, eight hundred sixteen".