149378693 has 2 divisors, whose sum is σ = 149378694. Its totient is φ = 149378692.

The previous prime is 149378687. The next prime is 149378699. The reversal of 149378693 is 396873941.

149378693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (149378687) and next prime (149378699).

It can be written as a sum of positive squares in only one way, i.e., 141181924 + 8196769 = 11882^2 + 2863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149378693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149378699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74689346 + 74689347.

It is an arithmetic number, because the mean of its divisors is an integer number (74689347).

Almost surely, 2^149378693 is an apocalyptic number.

It is an amenable number.

149378693 is a deficient number, since it is larger than the sum of its proper divisors (1).

149378693 is an equidigital number, since it uses as much as digits as its factorization.

149378693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 50.

The square root of 149378693 is about 12222.0576418212. The cubic root of 149378693 is about 530.5946724925.

The spelling of 149378693 in words is "one hundred forty-nine million, three hundred seventy-eight thousand, six hundred ninety-three".