37499993 has 2 divisors, whose sum is σ = 37499994. Its totient is φ = 37499992.

The previous prime is 37499971. The next prime is 37500007. The reversal of 37499993 is 39999473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36638809 + 861184 = 6053^2 + 928^2 .

It is an emirp because it is prime and its reverse (39999473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37499993 - 2¹⁶ = 37434457 is a prime.

It is not a weakly prime, because it can be changed into another prime (37499923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18749996 + 18749997.

It is an arithmetic number, because the mean of its divisors is an integer number (18749997).

Almost surely, 2^37499993 is an apocalyptic number.

It is an amenable number.

37499993 is a deficient number, since it is larger than the sum of its proper divisors (1).

37499993 is an equidigital number, since it uses as much as digits as its factorization.

37499993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1653372, while the sum is 53.

The square root of 37499993 is about 6123.7237854103. The cubic root of 37499993 is about 334.7164542143.

The spelling of 37499993 in words is "thirty-seven million, four hundred ninety-nine thousand, nine hundred ninety-three".