1251965496 has 32 divisors (see below), whose sum is σ = 3237843600. Its totient is φ = 402931200.

The previous prime is 1251965489. The next prime is 1251965501. The reversal of 1251965496 is 6945691521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898705 + ... + 900096.

Almost surely, 2^1251965496 is an apocalyptic number.

It is an amenable number.

1251965496 is an abundant number, since it is smaller than the sum of its proper divisors (1985878104).

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

1251965496 is a wasteful number, since it uses less digits than its factorization.

1251965496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798839 (or 1798835 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 1251965496 is about 35383.1244522018. The cubic root of 1251965496 is about 1077.7816537155.

The spelling of 1251965496 in words is "one billion, two hundred fifty-one million, nine hundred sixty-five thousand, four hundred ninety-six".