37749149 has 2 divisors, whose sum is σ = 37749150. Its totient is φ = 37749148.

The previous prime is 37749113. The next prime is 37749193. The reversal of 37749149 is 94194773.

It is a happy number.

It is an a-pointer prime, because the next prime (37749193) can be obtained adding 37749149 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37429924 + 319225 = 6118^2 + 565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37749149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37749109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18874574 + 18874575.

It is an arithmetic number, because the mean of its divisors is an integer number (18874575).

Almost surely, 2^37749149 is an apocalyptic number.

It is an amenable number.

37749149 is a deficient number, since it is larger than the sum of its proper divisors (1).

37749149 is an equidigital number, since it uses as much as digits as its factorization.

37749149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 37749149 is about 6144.0336099341. The cubic root of 37749149 is about 335.4561218319.

The spelling of 37749149 in words is "thirty-seven million, seven hundred forty-nine thousand, one hundred forty-nine".