1955995400 has 24 divisors (see below), whose sum is σ = 4547689770. Its totient is φ = 782398080.

The previous prime is 1955995373. The next prime is 1955995421. The reversal of 1955995400 is 45995591.

It can be written as a sum of positive squares in 3 ways, for example, as 1822777636 + 133217764 = 42694^2 + 11542^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4889789 + ... + 4890188.

Almost surely, 2^1955995400 is an apocalyptic number.

1955995400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1955995400 is an abundant number, since it is smaller than the sum of its proper divisors (2591694370).

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

1955995400 is a wasteful number, since it uses less digits than its factorization.

1955995400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779993 (or 9779984 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 47.

The square root of 1955995400 is about 44226.6367701637. The cubic root of 1955995400 is about 1250.6120522647.

The spelling of 1955995400 in words is "one billion, nine hundred fifty-five million, nine hundred ninety-five thousand, four hundred".