149747658 has 32 divisors (see below), whose sum is σ = 308365440. Its totient is φ = 48444480.

The previous prime is 149747617. The next prime is 149747659. The reversal of 149747658 is 856747941.

It is a super-2 number, since 2×149747658² = 44848722152969928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149747658.

It is not an unprimeable number, because it can be changed into a prime (149747659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139548 + ... + 140616.

It is an arithmetic number, because the mean of its divisors is an integer number (9636420).

Almost surely, 2^149747658 is an apocalyptic number.

149747658 is an abundant number, since it is smaller than the sum of its proper divisors (158617782).

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

149747658 is a wasteful number, since it uses less digits than its factorization.

149747658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742.

The product of its digits is 1693440, while the sum is 51.

The square root of 149747658 is about 12237.1425586205. The cubic root of 149747658 is about 531.0311691479.

The spelling of 149747658 in words is "one hundred forty-nine million, seven hundred forty-seven thousand, six hundred fifty-eight".