1927880140 has 24 divisors (see below), whose sum is σ = 4050757872. Its totient is φ = 770731200.

The previous prime is 1927880137. The next prime is 1927880191. The reversal of 1927880140 is 410887291.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1927880093 and 1927880102.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12667 + ... + 63373.

It is an arithmetic number, because the mean of its divisors is an integer number (168781578).

Almost surely, 2^1927880140 is an apocalyptic number.

1927880140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1927880140 is an abundant number, since it is smaller than the sum of its proper divisors (2122877732).

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

1927880140 is a wasteful number, since it uses less digits than its factorization.

1927880140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52617 (or 52615 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1927880140 is about 43907.6319106371. The cubic root of 1927880140 is about 1244.5910583059.

The spelling of 1927880140 in words is "one billion, nine hundred twenty-seven million, eight hundred eighty thousand, one hundred forty".