38490149 has 2 divisors, whose sum is σ = 38490150. Its totient is φ = 38490148.

The previous prime is 38490139. The next prime is 38490157. The reversal of 38490149 is 94109483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38353249 + 136900 = 6193^2 + 370^2 .

It is a cyclic number.

It is not a de Polignac number, because 38490149 - 2¹⁶ = 38424613 is a prime.

It is a super-3 number, since 3×38490149³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38490139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19245074 + 19245075.

It is an arithmetic number, because the mean of its divisors is an integer number (19245075).

Almost surely, 2^38490149 is an apocalyptic number.

It is an amenable number.

38490149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38490149 is an equidigital number, since it uses as much as digits as its factorization.

38490149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 38490149 is about 6204.0429560086. The cubic root of 38490149 is about 337.6368688583.

The spelling of 38490149 in words is "thirty-eight million, four hundred ninety thousand, one hundred forty-nine".