149946690 has 32 divisors (see below), whose sum is σ = 371483136. Its totient is φ = 38695680.

The previous prime is 149946673. The next prime is 149946691. The reversal of 149946690 is 96649941.

It is a super-2 number, since 2×149946690² = 44968019683912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149946691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79687 + ... + 81546.

It is an arithmetic number, because the mean of its divisors is an integer number (11608848).

Almost surely, 2^149946690 is an apocalyptic number.

149946690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149946690 is an abundant number, since it is smaller than the sum of its proper divisors (221536446).

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

149946690 is a wasteful number, since it uses less digits than its factorization.

149946690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161274.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 149946690 is about 12245.2721488744. The cubic root of 149946690 is about 531.2663323237.

The spelling of 149946690 in words is "one hundred forty-nine million, nine hundred forty-six thousand, six hundred ninety".