1630215572 has 6 divisors (see below), whose sum is σ = 2852877258. Its totient is φ = 815107784.

The previous prime is 1630215571. The next prime is 1630215611. The reversal of 1630215572 is 2755120361.

It can be written as a sum of positive squares in only one way, i.e., 963233296 + 666982276 = 31036^2 + 25826^2 .

It is a super-2 number, since 2×1630215572² = 5315205622382574368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630215571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203776943 + ... + 203776950.

It is an arithmetic number, because the mean of its divisors is an integer number (475479543).

Almost surely, 2^1630215572 is an apocalyptic number.

It is an amenable number.

1630215572 is a deficient number, since it is larger than the sum of its proper divisors (1222661686).

1630215572 is a wasteful number, since it uses less digits than its factorization.

1630215572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407553897 (or 407553895 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1630215572 is about 40375.9281255552. The cubic root of 1630215572 is about 1176.9238011328.

The spelling of 1630215572 in words is "one billion, six hundred thirty million, two hundred fifteen thousand, five hundred seventy-two".