149922819 has 40 divisors (see below), whose sum is σ = 229996800. Its totient is φ = 97297200.

The previous prime is 149922797. The next prime is 149922823. The reversal of 149922819 is 918229941.

It is not a de Polignac number, because 149922819 - 2¹³ = 149914627 is a prime.

It is a super-2 number, since 2×149922819² = 44953703313813522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149922859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 753282 + ... + 753480.

It is an arithmetic number, because the mean of its divisors is an integer number (5749920).

Almost surely, 2^149922819 is an apocalyptic number.

149922819 is a deficient number, since it is larger than the sum of its proper divisors (80073981).

149922819 is a wasteful number, since it uses less digits than its factorization.

149922819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 404 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 149922819 is about 12244.2974073648. The cubic root of 149922819 is about 531.2381389001.

The spelling of 149922819 in words is "one hundred forty-nine million, nine hundred twenty-two thousand, eight hundred nineteen".