1940253420 has 96 divisors (see below), whose sum is σ = 6409138176. Its totient is φ = 429177600.

The previous prime is 1940253391. The next prime is 1940253421. The reversal of 1940253420 is 243520491.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1940253421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61491 + ... + 87530.

It is an arithmetic number, because the mean of its divisors is an integer number (66761856).

Almost surely, 2^1940253420 is an apocalyptic number.

1940253420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940253420 is an abundant number, since it is smaller than the sum of its proper divisors (4468884756).

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

1940253420 is a wasteful number, since it uses less digits than its factorization.

1940253420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149071 (or 149069 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1940253420 is about 44048.3077995058. The cubic root of 1940253420 is about 1247.2480086144.

The spelling of 1940253420 in words is "one billion, nine hundred forty million, two hundred fifty-three thousand, four hundred twenty".