1372467978 has 48 divisors (see below), whose sum is σ = 3515690880. Its totient is φ = 378610848.

The previous prime is 1372467947. The next prime is 1372467979. The reversal of 1372467978 is 8797642731.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1372467979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184150 + ... + 191457.

It is an arithmetic number, because the mean of its divisors is an integer number (73243560).

Almost surely, 2^1372467978 is an apocalyptic number.

1372467978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1372467978 is an abundant number, since it is smaller than the sum of its proper divisors (2143222902).

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

1372467978 is a wasteful number, since it uses less digits than its factorization.

1372467978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375651 (or 375648 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 1372467978 is about 37046.8349255372. The cubic root of 1372467978 is about 1111.3070602423.

The spelling of 1372467978 in words is "one billion, three hundred seventy-two million, four hundred sixty-seven thousand, nine hundred seventy-eight".