1378996974 has 40 divisors (see below), whose sum is σ = 3099430488. Its totient is φ = 458259120.

The previous prime is 1378996961. The next prime is 1378996981. The reversal of 1378996974 is 4796998731.

1378996974 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40764 + ... + 66480.

Almost surely, 2^1378996974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378996974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549715244).

1378996974 is an abundant number, since it is smaller than the sum of its proper divisors (1720433514).

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

1378996974 is a wasteful number, since it uses less digits than its factorization.

1378996974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26062 (or 26053 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The square root of 1378996974 is about 37134.8485118763. The cubic root of 1378996974 is about 1113.0664805794.

The spelling of 1378996974 in words is "one billion, three hundred seventy-eight million, nine hundred ninety-six thousand, nine hundred seventy-four".