149601640 has 32 divisors (see below), whose sum is σ = 336960000. Its totient is φ = 59777344.

The previous prime is 149601631. The next prime is 149601643. The reversal of 149601640 is 46106941.

It is not an unprimeable number, because it can be changed into a prime (149601643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61161 + ... + 63559.

It is an arithmetic number, because the mean of its divisors is an integer number (10530000).

Almost surely, 2^149601640 is an apocalyptic number.

149601640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149601640 is an abundant number, since it is smaller than the sum of its proper divisors (187358360).

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

149601640 is a wasteful number, since it uses less digits than its factorization.

149601640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 149601640 is about 12231.1749231217. The cubic root of 149601640 is about 530.8585112982.

The spelling of 149601640 in words is "one hundred forty-nine million, six hundred one thousand, six hundred forty".