1895399994 has 16 divisors (see below), whose sum is σ = 3797376768. Its totient is φ = 630703872.

The previous prime is 1895399993. The next prime is 1895400007. The reversal of 1895399994 is 4999935981.

It is a super-2 number, since 2×1895399994² = 7185082274510400072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1895399993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270282 + ... + 277205.

It is an arithmetic number, because the mean of its divisors is an integer number (237336048).

Almost surely, 2^1895399994 is an apocalyptic number.

1895399994 is an abundant number, since it is smaller than the sum of its proper divisors (1901976774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1895399994 is a wasteful number, since it uses less digits than its factorization.

1895399994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548069.

The product of its digits is 28343520, while the sum is 66.

The square root of 1895399994 is about 43536.1917719040. The cubic root of 1895399994 is about 1237.5619790609.

The spelling of 1895399994 in words is "one billion, eight hundred ninety-five million, three hundred ninety-nine thousand, nine hundred ninety-four".