37818147457 has 4 divisors (see below), whose sum is σ = 37864211796. Its totient is φ = 37772083120.

The previous prime is 37818147431. The next prime is 37818147461. The reversal of 37818147457 is 75474181873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75474181873 = 125731 ⋅600283.

It can be written as a sum of positive squares in 2 ways, for example, as 10869313536 + 26948833921 = 104256^2 + 164161^2 .

It is a cyclic number.

It is not a de Polignac number, because 37818147457 - 2⁷ = 37818147329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 37818147398 and 37818147407.

It is not an unprimeable number, because it can be changed into a prime (37818147427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23030938 + ... + 23032579.

It is an arithmetic number, because the mean of its divisors is an integer number (9466052949).

Almost surely, 2^37818147457 is an apocalyptic number.

It is an amenable number.

37818147457 is a deficient number, since it is larger than the sum of its proper divisors (46064339).

37818147457 is an equidigital number, since it uses as much as digits as its factorization.

37818147457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46064338.

The product of its digits is 5268480, while the sum is 55.

The spelling of 37818147457 in words is "thirty-seven billion, eight hundred eighteen million, one hundred forty-seven thousand, four hundred fifty-seven".