149493786 has 64 divisors (see below), whose sum is σ = 341712000. Its totient is φ = 43220736.

The previous prime is 149493769. The next prime is 149493823. The reversal of 149493786 is 687394941.

It is a super-2 number, since 2×149493786² = 44696784105227592, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220480 + ... + 221156.

It is an arithmetic number, because the mean of its divisors is an integer number (5339250).

Almost surely, 2^149493786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149493786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170856000).

149493786 is an abundant number, since it is smaller than the sum of its proper divisors (192218214).

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

149493786 is a wasteful number, since it uses less digits than its factorization.

149493786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863.

The product of its digits is 1306368, while the sum is 51.

The square root of 149493786 is about 12226.7651486401. The cubic root of 149493786 is about 530.7309080210.

The spelling of 149493786 in words is "one hundred forty-nine million, four hundred ninety-three thousand, seven hundred eighty-six".