2157373441 has 2 divisors, whose sum is σ = 2157373442. Its totient is φ = 2157373440.

The previous prime is 2157373429. The next prime is 2157373501. The reversal of 2157373441 is 1443737512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2098006416 + 59367025 = 45804^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157373441 - 2¹⁹ = 2156849153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2157373441.

It is not a weakly prime, because it can be changed into another prime (2157374441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078686720 + 1078686721.

It is an arithmetic number, because the mean of its divisors is an integer number (1078686721).

Almost surely, 2^2157373441 is an apocalyptic number.

It is an amenable number.

2157373441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157373441 is an equidigital number, since it uses as much as digits as its factorization.

2157373441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 37.

The square root of 2157373441 is about 46447.5342833180. The cubic root of 2157373441 is about 1292.1366431807.

The spelling of 2157373441 in words is "two billion, one hundred fifty-seven million, three hundred seventy-three thousand, four hundred forty-one".