1958864057 has 4 divisors (see below), whose sum is σ = 1959422976. Its totient is φ = 1958305140.

The previous prime is 1958864051. The next prime is 1958864107. The reversal of 1958864057 is 7504688591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1958864057 - 2⁴ = 1958864041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1958864051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274169 + ... + 281222.

It is an arithmetic number, because the mean of its divisors is an integer number (489855744).

Almost surely, 2^1958864057 is an apocalyptic number.

It is an amenable number.

1958864057 is a deficient number, since it is larger than the sum of its proper divisors (558919).

1958864057 is an equidigital number, since it uses as much as digits as its factorization.

1958864057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558918.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The square root of 1958864057 is about 44259.0562145195. The cubic root of 1958864057 is about 1251.2231349224.

The spelling of 1958864057 in words is "one billion, nine hundred fifty-eight million, eight hundred sixty-four thousand, fifty-seven".