2157902433 has 24 divisors (see below), whose sum is σ = 3172916448. Its totient is φ = 1412908992.

The previous prime is 2157902431. The next prime is 2157902437. The reversal of 2157902433 is 3342097512.

2157902433 is a `hidden beast` number, since 215 + 7 + 9 + 0 + 2 + 433 = 666.

It is not a de Polignac number, because 2157902433 - 2¹ = 2157902431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2157902431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204085 + ... + 214397.

It is an arithmetic number, because the mean of its divisors is an integer number (132204852).

Almost surely, 2^2157902433 is an apocalyptic number.

It is an amenable number.

2157902433 is a deficient number, since it is larger than the sum of its proper divisors (1015014015).

2157902433 is a wasteful number, since it uses less digits than its factorization.

2157902433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733 (or 10730 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 2157902433 is about 46453.2284453944. The cubic root of 2157902433 is about 1292.2422459899.

Adding to 2157902433 its reverse (3342097512), we get a palindrome (5499999945).

The spelling of 2157902433 in words is "two billion, one hundred fifty-seven million, nine hundred two thousand, four hundred thirty-three".