37220749 has 2 divisors, whose sum is σ = 37220750. Its totient is φ = 37220748.

The previous prime is 37220741. The next prime is 37220809. The reversal of 37220749 is 94702273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37124649 + 96100 = 6093^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 37220749 - 2³ = 37220741 is a prime.

It is a super-2 number, since 2×37220749² = 2770768312242002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37220741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18610374 + 18610375.

It is an arithmetic number, because the mean of its divisors is an integer number (18610375).

Almost surely, 2^37220749 is an apocalyptic number.

It is an amenable number.

37220749 is a deficient number, since it is larger than the sum of its proper divisors (1).

37220749 is an equidigital number, since it uses as much as digits as its factorization.

37220749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 37220749 is about 6100.8810019537. The cubic root of 37220749 is about 333.8835604728.

The spelling of 37220749 in words is "thirty-seven million, two hundred twenty thousand, seven hundred forty-nine".