149401738 has 4 divisors (see below), whose sum is σ = 224102610. Its totient is φ = 74700868.

The previous prime is 149401723. The next prime is 149401739. The reversal of 149401738 is 837104941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 149401729 + 9 = 12223^2 + 3^2 .

It is a junction number, because it is equal to n+sod(n) for n = 149401697 and 149401706.

It is not an unprimeable number, because it can be changed into a prime (149401739) 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 as a sum of consecutive naturals, namely, 37350433 + ... + 37350436.

Almost surely, 2^149401738 is an apocalyptic number.

149401738 is a deficient number, since it is larger than the sum of its proper divisors (74700872).

149401738 is an equidigital number, since it uses as much as digits as its factorization.

149401738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74700871.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 149401738 is about 12223.0003681584. Note that the first 3 decimals coincide. The cubic root of 149401738 is about 530.6219564495.

The spelling of 149401738 in words is "one hundred forty-nine million, four hundred one thousand, seven hundred thirty-eight".