1937491020 has 144 divisors (see below), whose sum is σ = 6493556160. Its totient is φ = 465113088.

The previous prime is 1937491013. The next prime is 1937491021. The reversal of 1937491020 is 201947391.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1937491021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56616 + ... + 84144.

It is an arithmetic number, because the mean of its divisors is an integer number (45094140).

Almost surely, 2^1937491020 is an apocalyptic number.

1937491020 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 1937491020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3246778080).

1937491020 is an abundant number, since it is smaller than the sum of its proper divisors (4556065140).

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

1937491020 is a wasteful number, since it uses less digits than its factorization.

1937491020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27584 (or 27579 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1937491020 is about 44016.9401480839. The cubic root of 1937491020 is about 1246.6558120375.

The spelling of 1937491020 in words is "one billion, nine hundred thirty-seven million, four hundred ninety-one thousand, twenty".