2157157383 has 8 divisors (see below), whose sum is σ = 2877612288. Its totient is φ = 1437403704.

The previous prime is 2157157369. The next prime is 2157157391. The reversal of 2157157383 is 3837517512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2157157383 - 2¹² = 2157153287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157157283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168085 + ... + 180462.

It is an arithmetic number, because the mean of its divisors is an integer number (359701536).

Almost surely, 2^2157157383 is an apocalyptic number.

2157157383 is a deficient number, since it is larger than the sum of its proper divisors (720454905).

2157157383 is a wasteful number, since it uses less digits than its factorization.

2157157383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350613.

The product of its digits is 176400, while the sum is 42.

The square root of 2157157383 is about 46445.2083965612. The cubic root of 2157157383 is about 1292.0935065014.

The spelling of 2157157383 in words is "two billion, one hundred fifty-seven million, one hundred fifty-seven thousand, three hundred eighty-three".