1900597420 has 24 divisors (see below), whose sum is σ = 4084076304. Its totient is φ = 742558656.

The previous prime is 1900597333. The next prime is 1900597423. The reversal of 1900597420 is 247950091.

It is a super-2 number, since 2×1900597420² = 7224541105821312800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900597420.

It is not an unprimeable number, because it can be changed into a prime (1900597423) 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 7 ways as a sum of consecutive naturals, for example, 1104139 + ... + 1105858.

It is an arithmetic number, because the mean of its divisors is an integer number (170169846).

Almost surely, 2^1900597420 is an apocalyptic number.

1900597420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1900597420 is an abundant number, since it is smaller than the sum of its proper divisors (2183478884).

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

1900597420 is a wasteful number, since it uses less digits than its factorization.

1900597420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210049 (or 2210047 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1900597420 is about 43595.8417741876. The cubic root of 1900597420 is about 1238.6921303963.

The spelling of 1900597420 in words is "one billion, nine hundred million, five hundred ninety-seven thousand, four hundred twenty".