1955247900 has 72 divisors (see below), whose sum is σ = 5686969344. Its totient is φ = 518654400.

The previous prime is 1955247859. The next prime is 1955247901. The reversal of 1955247900 is 97425591.

1955247900 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955247901) 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, 40239 + ... + 74361.

Almost surely, 2^1955247900 is an apocalyptic number.

1955247900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1955247900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2843484672).

1955247900 is an abundant number, since it is smaller than the sum of its proper divisors (3731721444).

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

1955247900 is a wasteful number, since it uses less digits than its factorization.

1955247900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34331 (or 34324 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 1955247900 is about 44218.1851730710. The cubic root of 1955247900 is about 1250.4527213482.

The spelling of 1955247900 in words is "one billion, nine hundred fifty-five million, two hundred forty-seven thousand, nine hundred".