185290000394 has 16 divisors (see below), whose sum is σ = 278737018560. Its totient is φ = 92378036160.

The previous prime is 185290000373. The next prime is 185290000409. The reversal of 185290000394 is 493000092581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901949 + ... + 1088159.

It is an arithmetic number, because the mean of its divisors is an integer number (17421063660).

Almost surely, 2^185290000394 is an apocalyptic number.

185290000394 is a deficient number, since it is larger than the sum of its proper divisors (93447018166).

185290000394 is a wasteful number, since it uses less digits than its factorization.

185290000394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187645.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 185290000394 in words is "one hundred eighty-five billion, two hundred ninety million, three hundred ninety-four", and thus it is an aban number.