2045323157 has 2 divisors, whose sum is σ = 2045323158. Its totient is φ = 2045323156.

The previous prime is 2045323129. The next prime is 2045323183. The reversal of 2045323157 is 7513235402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1181021956 + 864301201 = 34366^2 + 29399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045323157 - 2¹² = 2045319061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045323127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022661578 + 1022661579.

It is an arithmetic number, because the mean of its divisors is an integer number (1022661579).

Almost surely, 2^2045323157 is an apocalyptic number.

It is an amenable number.

2045323157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045323157 is an equidigital number, since it uses as much as digits as its factorization.

2045323157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 2045323157 is about 45225.2491093195. The cubic root of 2045323157 is about 1269.3673160461.

Adding to 2045323157 its reverse (7513235402), we get a palindrome (9558558559).

The spelling of 2045323157 in words is "two billion, forty-five million, three hundred twenty-three thousand, one hundred fifty-seven".