40149387437 has 2 divisors, whose sum is σ = 40149387438. Its totient is φ = 40149387436.

The previous prime is 40149387431. The next prime is 40149387451. The reversal of 40149387437 is 73478394104.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39675062596 + 474324841 = 199186^2 + 21779^2 .

It is a cyclic number.

It is not a de Polignac number, because 40149387437 - 2¹⁰ = 40149386413 is a prime.

It is a super-2 number, since 2×40149387437² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40149387431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20074693718 + 20074693719.

It is an arithmetic number, because the mean of its divisors is an integer number (20074693719).

Almost surely, 2^40149387437 is an apocalyptic number.

It is an amenable number.

40149387437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40149387437 is an equidigital number, since it uses as much as digits as its factorization.

40149387437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 40149387437 in words is "forty billion, one hundred forty-nine million, three hundred eighty-seven thousand, four hundred thirty-seven".