1987182642 has 16 divisors (see below), whose sum is σ = 4002959520. Its totient is φ = 657628512.

The previous prime is 1987182601. The next prime is 1987182647. The reversal of 1987182642 is 2462817891.

It is a happy number.

It is a super-2 number, since 2×1987182642² = 7897789705332200328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1987182591 and 1987182600.

It is not an unprimeable number, because it can be changed into a prime (1987182647) 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, 1190523 + ... + 1192190.

It is an arithmetic number, because the mean of its divisors is an integer number (250184970).

Almost surely, 2^1987182642 is an apocalyptic number.

1987182642 is an abundant number, since it is smaller than the sum of its proper divisors (2015776878).

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

1987182642 is a wasteful number, since it uses less digits than its factorization.

1987182642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382857.

The product of its digits is 387072, while the sum is 48.

The square root of 1987182642 is about 44577.8267976356. The cubic root of 1987182642 is about 1257.2238032085.

The spelling of 1987182642 in words is "one billion, nine hundred eighty-seven million, one hundred eighty-two thousand, six hundred forty-two".