1515961940 has 24 divisors (see below), whose sum is σ = 3203057760. Its totient is φ = 602663328.

The previous prime is 1515961913. The next prime is 1515961963. The reversal of 1515961940 is 491695151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229250 + ... + 235769.

It is an arithmetic number, because the mean of its divisors is an integer number (133460740).

Almost surely, 2^1515961940 is an apocalyptic number.

1515961940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1515961940 is an abundant number, since it is smaller than the sum of its proper divisors (1687095820).

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

1515961940 is a wasteful number, since it uses less digits than its factorization.

1515961940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465191 (or 465189 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 1515961940 is about 38935.3559120756. The cubic root of 1515961940 is about 1148.7603377630.

The spelling of 1515961940 in words is "one billion, five hundred fifteen million, nine hundred sixty-one thousand, nine hundred forty".