187850745 has 20 divisors (see below), whose sum is σ = 336740580. Its totient is φ = 100186848.

The previous prime is 187850737. The next prime is 187850759. The reversal of 187850745 is 547058781.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20820969 + 167029776 = 4563^2 + 12924^2 .

It is not a de Polignac number, because 187850745 - 2³ = 187850737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 187850745.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 231510 + ... + 232319.

It is an arithmetic number, because the mean of its divisors is an integer number (16837029).

Almost surely, 2^187850745 is an apocalyptic number.

187850745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

187850745 is a deficient number, since it is larger than the sum of its proper divisors (148889835).

187850745 is an equidigital number, since it uses as much as digits as its factorization.

187850745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463846 (or 463837 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 187850745 is about 13705.8653502798. The cubic root of 187850745 is about 572.7137903443.

The spelling of 187850745 in words is "one hundred eighty-seven million, eight hundred fifty thousand, seven hundred forty-five".