1939150140 has 24 divisors (see below), whose sum is σ = 5429620560. Its totient is φ = 517106688.

The previous prime is 1939150117. The next prime is 1939150141. The reversal of 1939150140 is 410519391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939150141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16159525 + ... + 16159644.

It is an arithmetic number, because the mean of its divisors is an integer number (226234190).

Almost surely, 2^1939150140 is an apocalyptic number.

1939150140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1939150140 is an abundant number, since it is smaller than the sum of its proper divisors (3490470420).

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

1939150140 is a wasteful number, since it uses less digits than its factorization.

1939150140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32319181 (or 32319179 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 1939150140 is about 44035.7824956024. The cubic root of 1939150140 is about 1247.0115575966.

The spelling of 1939150140 in words is "one billion, nine hundred thirty-nine million, one hundred fifty thousand, one hundred forty".