2072156493 has 16 divisors (see below), whose sum is σ = 3033251136. Its totient is φ = 1247850240.

The previous prime is 2072156483. The next prime is 2072156507. The reversal of 2072156493 is 3946512702.

It is not a de Polignac number, because 2072156493 - 2⁵ = 2072156461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072156453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194796 + ... + 205157.

It is an arithmetic number, because the mean of its divisors is an integer number (189578196).

Almost surely, 2^2072156493 is an apocalyptic number.

It is an amenable number.

2072156493 is a deficient number, since it is larger than the sum of its proper divisors (961094643).

2072156493 is a wasteful number, since it uses less digits than its factorization.

2072156493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400124.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2072156493 is about 45520.9456514251. The cubic root of 2072156493 is about 1274.8943125006.

The spelling of 2072156493 in words is "two billion, seventy-two million, one hundred fifty-six thousand, four hundred ninety-three".