1836397072 has 10 divisors (see below), whose sum is σ = 3558019358. Its totient is φ = 918198528.

The previous prime is 1836397067. The next prime is 1836397091. The reversal of 1836397072 is 2707936381.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1328165136 + 508231936 = 36444^2 + 22544^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57387393 + ... + 57387424.

Almost surely, 2^1836397072 is an apocalyptic number.

It is an amenable number.

1836397072 is a deficient number, since it is larger than the sum of its proper divisors (1721622286).

1836397072 is a wasteful number, since it uses less digits than its factorization.

1836397072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114774825 (or 114774819 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 1836397072 is about 42853.2037542119. The cubic root of 1836397072 is about 1224.5847982294.

The spelling of 1836397072 in words is "one billion, eight hundred thirty-six million, three hundred ninety-seven thousand, seventy-two".