149749371 has 8 divisors (see below), whose sum is σ = 221850960. Its totient is φ = 99832896.

The previous prime is 149749363. The next prime is 149749423. The reversal of 149749371 is 173947941.

149749371 is a `hidden beast` number, since 1 + 4 + 97 + 493 + 71 = 666.

It is not a de Polignac number, because 149749371 - 2³ = 149749363 is a prime.

It is a super-2 number, since 2×149749371² = 44849748229791282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149349371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773110 + ... + 2773163.

It is an arithmetic number, because the mean of its divisors is an integer number (27731370).

Almost surely, 2^149749371 is an apocalyptic number.

149749371 is a deficient number, since it is larger than the sum of its proper divisors (72101589).

149749371 is an equidigital number, since it uses as much as digits as its factorization.

149749371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546282 (or 5546276 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 149749371 is about 12237.2125502502. The cubic root of 149749371 is about 531.0331940052.

The spelling of 149749371 in words is "one hundred forty-nine million, seven hundred forty-nine thousand, three hundred seventy-one".