1316421672 has 32 divisors (see below), whose sum is σ = 3291953280. Its totient is φ = 438687360.

The previous prime is 1316421671. The next prime is 1316421677. The reversal of 1316421672 is 2761246131.

It is a super-2 number, since 2×1316421672² = 3465932037022551168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1316421671) 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, 148353 + ... + 156975.

It is an arithmetic number, because the mean of its divisors is an integer number (102873540).

Almost surely, 2^1316421672 is an apocalyptic number.

1316421672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1316421672 is an abundant number, since it is smaller than the sum of its proper divisors (1975531608).

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

1316421672 is a wasteful number, since it uses less digits than its factorization.

1316421672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14993 (or 14989 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 1316421672 is about 36282.5257114220. The cubic root of 1316421672 is about 1095.9691792530.

The spelling of 1316421672 in words is "one billion, three hundred sixteen million, four hundred twenty-one thousand, six hundred seventy-two".