1957995 has 24 divisors (see below), whose sum is σ = 3656016. Its totient is φ = 963648.

The previous prime is 1957981. The next prime is 1957997. The reversal of 1957995 is 5997591.

It is not a de Polignac number, because 1957995 - 2¹⁵ = 1925227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1957995.

It is not an unprimeable number, because it can be changed into a prime (1957997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1089 + ... + 2258.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

2^1957995 is an apocalyptic number.

1957995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1957995 is a deficient number, since it is larger than the sum of its proper divisors (1698021).

1957995 is a wasteful number, since it uses less digits than its factorization.

1957995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371 (or 3368 counting only the distinct ones).

The product of its digits is 127575, while the sum is 45.

The square root of 1957995 is about 1399.2837453497. The cubic root of 1957995 is about 125.1038071022.

The spelling of 1957995 in words is "one million, nine hundred fifty-seven thousand, nine hundred ninety-five".