1940195655 has 24 divisors (see below), whose sum is σ = 3371816448. Its totient is φ = 1032060096.

The previous prime is 1940195651. The next prime is 1940195687. The reversal of 1940195655 is 5565910491.

It is a happy number.

It is not a de Polignac number, because 1940195655 - 2² = 1940195651 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 1940195655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940195651) 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, 39052 + ... + 73521.

It is an arithmetic number, because the mean of its divisors is an integer number (140492352).

Almost surely, 2^1940195655 is an apocalyptic number.

1940195655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1940195655 is a deficient number, since it is larger than the sum of its proper divisors (1431620793).

1940195655 is a wasteful number, since it uses less digits than its factorization.

1940195655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112967 (or 112964 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 1940195655 is about 44047.6520940674. The cubic root of 1940195655 is about 1247.2356308505.

The spelling of 1940195655 in words is "one billion, nine hundred forty million, one hundred ninety-five thousand, six hundred fifty-five".