1974647252 has 6 divisors (see below), whose sum is σ = 3455632698. Its totient is φ = 987323624.

The previous prime is 1974647251. The next prime is 1974647303. The reversal of 1974647252 is 2527464791.

It can be written as a sum of positive squares in only one way, i.e., 1540091536 + 434555716 = 39244^2 + 20846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1974647197 and 1974647206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974647251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246830903 + ... + 246830910.

It is an arithmetic number, because the mean of its divisors is an integer number (575938783).

Almost surely, 2^1974647252 is an apocalyptic number.

It is an amenable number.

1974647252 is a deficient number, since it is larger than the sum of its proper divisors (1480985446).

1974647252 is a wasteful number, since it uses less digits than its factorization.

1974647252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493661817 (or 493661815 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 1974647252 is about 44437.0031842833. The cubic root of 1974647252 is about 1254.5746513881.

The spelling of 1974647252 in words is "one billion, nine hundred seventy-four million, six hundred forty-seven thousand, two hundred fifty-two".