1974370398 has 128 divisors (see below), whose sum is σ = 5358044160. Its totient is φ = 468357120.

The previous prime is 1974370379. The next prime is 1974370421. The reversal of 1974370398 is 8930734791.

It is a self number, because there is not a number n which added to its sum of digits gives 1974370398.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 580888 + ... + 584276.

It is an arithmetic number, because the mean of its divisors is an integer number (41859720).

Almost surely, 2^1974370398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1974370398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2679022080).

1974370398 is an abundant number, since it is smaller than the sum of its proper divisors (3383673762).

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

1974370398 is a wasteful number, since it uses less digits than its factorization.

1974370398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522.

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

The square root of 1974370398 is about 44433.8879460261. The cubic root of 1974370398 is about 1254.5160164017.

The spelling of 1974370398 in words is "one billion, nine hundred seventy-four million, three hundred seventy thousand, three hundred ninety-eight".