1251679996 has 24 divisors (see below), whose sum is σ = 2523078656. Its totient is φ = 532208880.

The previous prime is 1251679969. The next prime is 1251680047. The reversal of 1251679996 is 6999761521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172440 + ... + 179551.

Almost surely, 2^1251679996 is an apocalyptic number.

It is an amenable number.

1251679996 is an abundant number, since it is smaller than the sum of its proper divisors (1271398660).

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

1251679996 is a wasteful number, since it uses less digits than its factorization.

1251679996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352129 (or 352127 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 55.

The square root of 1251679996 is about 35379.0898130520. The cubic root of 1251679996 is about 1077.6997211980.

The spelling of 1251679996 in words is "one billion, two hundred fifty-one million, six hundred seventy-nine thousand, nine hundred ninety-six".