1587940144 has 40 divisors (see below), whose sum is σ = 3522229920. Its totient is φ = 679369728.

The previous prime is 1587940141. The next prime is 1587940157. The reversal of 1587940144 is 4410497851.

It is a self number, because there is not a number n which added to its sum of digits gives 1587940144.

It is not an unprimeable number, because it can be changed into a prime (1587940141) 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, 54462 + ... + 78370.

It is an arithmetic number, because the mean of its divisors is an integer number (88055748).

Almost surely, 2^1587940144 is an apocalyptic number.

1587940144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1587940144 is an abundant number, since it is smaller than the sum of its proper divisors (1934289776).

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

1587940144 is a wasteful number, since it uses less digits than its factorization.

1587940144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24517 (or 24511 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1587940144 is about 39848.9666616338. The cubic root of 1587940144 is about 1166.6610783224.

The spelling of 1587940144 in words is "one billion, five hundred eighty-seven million, nine hundred forty thousand, one hundred forty-four".