37491906619 has 2 divisors, whose sum is σ = 37491906620. Its totient is φ = 37491906618.

The previous prime is 37491906577. The next prime is 37491906637. The reversal of 37491906619 is 91660919473.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91660919473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37491906619 - 2²³ = 37483518011 is a prime.

It is a super-2 number, since 2×37491906619² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 37491906619.

It is not a weakly prime, because it can be changed into another prime (37491901619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18745953309 + 18745953310.

It is an arithmetic number, because the mean of its divisors is an integer number (18745953310).

Almost surely, 2^37491906619 is an apocalyptic number.

37491906619 is a deficient number, since it is larger than the sum of its proper divisors (1).

37491906619 is an equidigital number, since it uses as much as digits as its factorization.

37491906619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The spelling of 37491906619 in words is "thirty-seven billion, four hundred ninety-one million, nine hundred six thousand, six hundred nineteen".