374139978 has 24 divisors (see below), whose sum is σ = 794889312. Its totient is φ = 117376704.

The previous prime is 374139977. The next prime is 374140037. The reversal of 374139978 is 879931473.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 374139978.

It is not an unprimeable number, because it can be changed into a prime (374139973) 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, 106150 + ... + 109617.

It is an arithmetic number, because the mean of its divisors is an integer number (33120388).

Almost surely, 2^374139978 is an apocalyptic number.

374139978 is an abundant number, since it is smaller than the sum of its proper divisors (420749334).

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

374139978 is a wasteful number, since it uses less digits than its factorization.

374139978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215806 (or 215789 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 374139978 is about 19342.6983122831. The cubic root of 374139978 is about 720.5730892491.

The spelling of 374139978 in words is "three hundred seventy-four million, one hundred thirty-nine thousand, nine hundred seventy-eight".