1864730057 has 2 divisors, whose sum is σ = 1864730058. Its totient is φ = 1864730056.

The previous prime is 1864730039. The next prime is 1864730099. The reversal of 1864730057 is 7500374681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1836893881 + 27836176 = 42859^2 + 5276^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864730057 - 2¹⁰ = 1864729033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1864729996 and 1864730023.

It is not a weakly prime, because it can be changed into another prime (1864730027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932365028 + 932365029.

It is an arithmetic number, because the mean of its divisors is an integer number (932365029).

Almost surely, 2^1864730057 is an apocalyptic number.

It is an amenable number.

1864730057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864730057 is an equidigital number, since it uses as much as digits as its factorization.

1864730057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1864730057 is about 43182.5202715173. The cubic root of 1864730057 is about 1230.8505490371.

The spelling of 1864730057 in words is "one billion, eight hundred sixty-four million, seven hundred thirty thousand, fifty-seven".