2157333049 has 2 divisors, whose sum is σ = 2157333050. Its totient is φ = 2157333048.

The previous prime is 2157333023. The next prime is 2157333071. The reversal of 2157333049 is 9403337512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251744400 + 905588649 = 35380^2 + 30093^2 .

It is a cyclic number.

It is not a de Polignac number, because 2157333049 - 2⁷ = 2157332921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2157332999 and 2157333017.

It is not a weakly prime, because it can be changed into another prime (2157333019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078666524 + 1078666525.

It is an arithmetic number, because the mean of its divisors is an integer number (1078666525).

Almost surely, 2^2157333049 is an apocalyptic number.

It is an amenable number.

2157333049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157333049 is an equidigital number, since it uses as much as digits as its factorization.

2157333049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 2157333049 is about 46447.0994681046. The cubic root of 2157333049 is about 1292.1285790060.

It can be divided in two parts, 215 and 7333049, that added together give a square (7333264 = 2708²).

The spelling of 2157333049 in words is "two billion, one hundred fifty-seven million, three hundred thirty-three thousand, forty-nine".