185416490 has 24 divisors (see below), whose sum is σ = 388240452. Its totient is φ = 63571200.

The previous prime is 185416477. The next prime is 185416493. The reversal of 185416490 is 94614581.

185416490 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 183846481 + 1570009 = 13559^2 + 1253^2 .

It is not an unprimeable number, because it can be changed into a prime (185416493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188711 + ... + 189690.

Almost surely, 2^185416490 is an apocalyptic number.

185416490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

185416490 is an abundant number, since it is smaller than the sum of its proper divisors (202823962).

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

185416490 is a wasteful number, since it uses less digits than its factorization.

185416490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378422 (or 378415 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 185416490 is about 13616.7723782106. The cubic root of 185416490 is about 570.2291988899.

The spelling of 185416490 in words is "one hundred eighty-five million, four hundred sixteen thousand, four hundred ninety".