149694534 has 64 divisors (see below), whose sum is σ = 378708480. Its totient is φ = 43385760.

The previous prime is 149694527. The next prime is 149694539. The reversal of 149694534 is 435496941.

It is a self number, because there is not a number n which added to its sum of digits gives 149694534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149694539) by changing a digit.

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, 8184 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (5917320).

Almost surely, 2^149694534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149694534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189354240).

149694534 is an abundant number, since it is smaller than the sum of its proper divisors (229013946).

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

149694534 is a wasteful number, since it uses less digits than its factorization.

149694534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11002 (or 10996 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 149694534 is about 12234.9717613078. The cubic root of 149694534 is about 530.9683660813.

It can be divided in two parts, 14969 and 4534, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 149694534 in words is "one hundred forty-nine million, six hundred ninety-four thousand, five hundred thirty-four".