1913057 has 4 divisors (see below), whose sum is σ = 1926960. Its totient is φ = 1899156.

The previous prime is 1913047. The next prime is 1913063. The reversal of 1913057 is 7503191.

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: 7503191 = 677 ⋅11083.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913017) 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, 6743 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (481740).

2^1913057 is an apocalyptic number.

It is an amenable number.

1913057 is a deficient number, since it is larger than the sum of its proper divisors (13903).

1913057 is a wasteful number, since it uses less digits than its factorization.

1913057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13902.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 1913057 is about 1383.1330377082. The cubic root of 1913057 is about 124.1393032105.

The spelling of 1913057 in words is "one million, nine hundred thirteen thousand, fifty-seven".