1976190140 has 12 divisors (see below), whose sum is σ = 4149999336. Its totient is φ = 790476048.

The previous prime is 1976190137. The next prime is 1976190149. The reversal of 1976190140 is 410916791.

It is a junction number, because it is equal to n+sod(n) for n = 1976190094 and 1976190103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1976190149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49404734 + ... + 49404773.

It is an arithmetic number, because the mean of its divisors is an integer number (345833278).

Almost surely, 2^1976190140 is an apocalyptic number.

1976190140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1976190140 is an abundant number, since it is smaller than the sum of its proper divisors (2173809196).

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

1976190140 is a wasteful number, since it uses less digits than its factorization.

1976190140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98809516 (or 98809514 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 1976190140 is about 44454.3601910994. The cubic root of 1976190140 is about 1254.9013197332.

It can be divided in two parts, 19761 and 90140, that added together give a palindrome (109901).

The spelling of 1976190140 in words is "one billion, nine hundred seventy-six million, one hundred ninety thousand, one hundred forty".