1974149284356 has 36 divisors (see below), whose sum is σ = 5006153884732. Its totient is φ = 655947362304.

The previous prime is 1974149284319. The next prime is 1974149284391. The reversal of 1974149284356 is 6534829414791.

1974149284356 is a `hidden beast` number, since 1 + 9 + 7 + 414 + 92 + 84 + 3 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1052676000000 + 921473284356 = 1026000^2 + 959934^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1974149284293 and 1974149284302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87588541 + ... + 87611076.

Almost surely, 2^{1974149284356} is an apocalyptic number.

It is an amenable number.

1974149284356 is an abundant number, since it is smaller than the sum of its proper divisors (3032004600376).

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

1974149284356 is a wasteful number, since it uses less digits than its factorization.

1974149284356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175199940 (or 175199935 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 1974149284356 in words is "one trillion, nine hundred seventy-four billion, one hundred forty-nine million, two hundred eighty-four thousand, three hundred fifty-six".