149078623 has 2 divisors, whose sum is σ = 149078624. Its totient is φ = 149078622.

The previous prime is 149078603. The next prime is 149078639. The reversal of 149078623 is 326870941.

149078623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149078623 - 2¹³ = 149070431 is a prime.

It is a super-2 number, since 2×149078623² = 44448871671152258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149078603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74539311 + 74539312.

It is an arithmetic number, because the mean of its divisors is an integer number (74539312).

Almost surely, 2^149078623 is an apocalyptic number.

149078623 is a deficient number, since it is larger than the sum of its proper divisors (1).

149078623 is an equidigital number, since it uses as much as digits as its factorization.

149078623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 149078623 is about 12209.7757145658. The cubic root of 149078623 is about 530.2391504089.

The spelling of 149078623 in words is "one hundred forty-nine million, seventy-eight thousand, six hundred twenty-three".