2153796772 has 6 divisors (see below), whose sum is σ = 3769144358. Its totient is φ = 1076898384.

The previous prime is 2153796767. The next prime is 2153796773. The reversal of 2153796772 is 2776973512.

It can be written as a sum of positive squares in only one way, i.e., 1271350336 + 882446436 = 35656^2 + 29706^2 .

It is not an unprimeable number, because it can be changed into a prime (2153796773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269224593 + ... + 269224600.

Almost surely, 2^2153796772 is an apocalyptic number.

It is an amenable number.

2153796772 is a deficient number, since it is larger than the sum of its proper divisors (1615347586).

2153796772 is a wasteful number, since it uses less digits than its factorization.

2153796772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538449197 (or 538449195 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 49.

The square root of 2153796772 is about 46409.0160636918. The cubic root of 2153796772 is about 1291.4221784936.

The spelling of 2153796772 in words is "two billion, one hundred fifty-three million, seven hundred ninety-six thousand, seven hundred seventy-two".