649235190 has 32 divisors (see below), whose sum is σ = 1559243520. Its totient is φ = 173009504.

The previous prime is 649235183. The next prime is 649235231. The reversal of 649235190 is 91532946.

It is a super-2 number, since 2×649235190² = 843012663868672200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41887 + ... + 55253.

It is an arithmetic number, because the mean of its divisors is an integer number (48726360).

Almost surely, 2^649235190 is an apocalyptic number.

649235190 is an abundant number, since it is smaller than the sum of its proper divisors (910008330).

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

649235190 is a wasteful number, since it uses less digits than its factorization.

649235190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14996.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 649235190 is about 25480.0939951171. The cubic root of 649235190 is about 865.8992241395.

The spelling of 649235190 in words is "six hundred forty-nine million, two hundred thirty-five thousand, one hundred ninety".