1974742772 has 6 divisors (see below), whose sum is σ = 3455799858. Its totient is φ = 987371384.

The previous prime is 1974742771. The next prime is 1974742787. The reversal of 1974742772 is 2772474791.

It can be written as a sum of positive squares in only one way, i.e., 1973669476 + 1073296 = 44426^2 + 1036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1974742772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974742771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246842843 + ... + 246842850.

It is an arithmetic number, because the mean of its divisors is an integer number (575966643).

Almost surely, 2^1974742772 is an apocalyptic number.

It is an amenable number.

1974742772 is a deficient number, since it is larger than the sum of its proper divisors (1481057086).

1974742772 is a wasteful number, since it uses less digits than its factorization.

1974742772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493685697 (or 493685695 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 50.

The square root of 1974742772 is about 44438.0779512346. The cubic root of 1974742772 is about 1254.5948803241.

The spelling of 1974742772 in words is "one billion, nine hundred seventy-four million, seven hundred forty-two thousand, seven hundred seventy-two".