187982420652 has 96 divisors (see below), whose sum is σ = 547670914560. Its totient is φ = 55325920320.

The previous prime is 187982420627. The next prime is 187982420677. The reversal of 187982420652 is 256024289781.

187982420652 is a `hidden beast` number, since 1 + 87 + 9 + 82 + 420 + 65 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (187982420627) and next prime (187982420677).

It is a super-2 number, since 2×187982420652² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2878374 + ... + 2942957.

It is an arithmetic number, because the mean of its divisors is an integer number (5704905360).

Almost surely, 2^187982420652 is an apocalyptic number.

187982420652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

187982420652 is an abundant number, since it is smaller than the sum of its proper divisors (359688493908).

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

187982420652 is a wasteful number, since it uses less digits than its factorization.

187982420652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821380 (or 5821372 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 187982420652 in words is "one hundred eighty-seven billion, nine hundred eighty-two million, four hundred twenty thousand, six hundred fifty-two".