1955497100 has 36 divisors (see below), whose sum is σ = 4466771400. Its totient is φ = 741029760.

The previous prime is 1955497073. The next prime is 1955497109. The reversal of 1955497100 is 17945591.

It is not an unprimeable number, because it can be changed into a prime (1955497109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512705 + ... + 516504.

Almost surely, 2^1955497100 is an apocalyptic number.

1955497100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1955497100 is an abundant number, since it is smaller than the sum of its proper divisors (2511274300).

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

1955497100 is a wasteful number, since it uses less digits than its factorization.

1955497100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029242 (or 1029235 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 1955497100 is about 44221.0029284728. The cubic root of 1955497100 is about 1250.5058432705.

The spelling of 1955497100 in words is "one billion, nine hundred fifty-five million, four hundred ninety-seven thousand, one hundred".