149805437 has 2 divisors, whose sum is σ = 149805438. Its totient is φ = 149805436.

The previous prime is 149805427. The next prime is 149805511. The reversal of 149805437 is 734508941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144264121 + 5541316 = 12011^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 149805437 - 2⁶ = 149805373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149805394 and 149805403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149805427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74902718 + 74902719.

It is an arithmetic number, because the mean of its divisors is an integer number (74902719).

Almost surely, 2^149805437 is an apocalyptic number.

It is an amenable number.

149805437 is a deficient number, since it is larger than the sum of its proper divisors (1).

149805437 is an equidigital number, since it uses as much as digits as its factorization.

149805437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 149805437 is about 12239.5031353401. The cubic root of 149805437 is about 531.0994584843.

The spelling of 149805437 in words is "one hundred forty-nine million, eight hundred five thousand, four hundred thirty-seven".