37402649 has 2 divisors, whose sum is σ = 37402650. Its totient is φ = 37402648.

The previous prime is 37402639. The next prime is 37402657. The reversal of 37402649 is 94620473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30327049 + 7075600 = 5507^2 + 2660^2 .

It is an emirp because it is prime and its reverse (94620473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37402649 - 2⁴ = 37402633 is a prime.

It is not a weakly prime, because it can be changed into another prime (37402609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18701324 + 18701325.

It is an arithmetic number, because the mean of its divisors is an integer number (18701325).

Almost surely, 2^37402649 is an apocalyptic number.

It is an amenable number.

37402649 is a deficient number, since it is larger than the sum of its proper divisors (1).

37402649 is an equidigital number, since it uses as much as digits as its factorization.

37402649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 37402649 is about 6115.7705156423. The cubic root of 37402649 is about 334.4265797392.

The spelling of 37402649 in words is "thirty-seven million, four hundred two thousand, six hundred forty-nine".