1974394756 has 24 divisors (see below), whose sum is σ = 3664850616. Its totient is φ = 927498240.

The previous prime is 1974394711. The next prime is 1974394789. The reversal of 1974394756 is 6574934791.

It can be written as a sum of positive squares in 4 ways, for example, as 1388754756 + 585640000 = 37266^2 + 24200^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1974394697 and 1974394706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14076 + ... + 64396.

It is an arithmetic number, because the mean of its divisors is an integer number (152702109).

Almost surely, 2^1974394756 is an apocalyptic number.

It is an amenable number.

1974394756 is a deficient number, since it is larger than the sum of its proper divisors (1690455860).

1974394756 is a wasteful number, since it uses less digits than its factorization.

1974394756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50919 (or 50917 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 55.

The square root of 1974394756 is about 44434.1620377835. The cubic root of 1974394756 is about 1254.5211754093.

The spelling of 1974394756 in words is "one billion, nine hundred seventy-four million, three hundred ninety-four thousand, seven hundred fifty-six".