1206930057 has 4 divisors (see below), whose sum is σ = 1609240080. Its totient is φ = 804620036.

The previous prime is 1206930041. The next prime is 1206930071. The reversal of 1206930057 is 7500396021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7500396021 = 3 ⋅2500132007.

It is a cyclic number.

It is not a de Polignac number, because 1206930057 - 2⁴ = 1206930041 is a prime.

It is a super-3 number, since 3×1206930057³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1206930007) 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, 201155007 + ... + 201155012.

It is an arithmetic number, because the mean of its divisors is an integer number (402310020).

Almost surely, 2^1206930057 is an apocalyptic number.

It is an amenable number.

1206930057 is a deficient number, since it is larger than the sum of its proper divisors (402310023).

1206930057 is an equidigital number, since it uses as much as digits as its factorization.

1206930057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402310022.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 1206930057 is about 34740.8989089229. The cubic root of 1206930057 is about 1064.7002784605.

The spelling of 1206930057 in words is "one billion, two hundred six million, nine hundred thirty thousand, fifty-seven".