1487990642 has 4 divisors (see below), whose sum is σ = 2231985966. Its totient is φ = 743995320.

The previous prime is 1487990639. The next prime is 1487990653. The reversal of 1487990642 is 2460997841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 758396521 + 729594121 = 27539^2 + 27011^2 .

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 as a sum of consecutive naturals, namely, 371997659 + ... + 371997662.

Almost surely, 2^1487990642 is an apocalyptic number.

1487990642 is a deficient number, since it is larger than the sum of its proper divisors (743995324).

1487990642 is an equidigital number, since it uses as much as digits as its factorization.

1487990642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743995323.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1487990642 is about 38574.4817463566. The cubic root of 1487990642 is about 1141.6511013939.

The spelling of 1487990642 in words is "one billion, four hundred eighty-seven million, nine hundred ninety thousand, six hundred forty-two".