1850639376401 has 2 divisors, whose sum is σ = 1850639376402. Its totient is φ = 1850639376400.

The previous prime is 1850639376373. The next prime is 1850639376433. The reversal of 1850639376401 is 1046739360581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1056979329025 + 793660047376 = 1028095^2 + 890876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850639376401 is a prime.

It is a super-2 number, since 2×1850639376401² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1850639376101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925319688200 + 925319688201.

It is an arithmetic number, because the mean of its divisors is an integer number (925319688201).

Almost surely, 2^{1850639376401} is an apocalyptic number.

It is an amenable number.

1850639376401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1850639376401 is an equidigital number, since it uses as much as digits as its factorization.

1850639376401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 1850639376401 in words is "one trillion, eight hundred fifty billion, six hundred thirty-nine million, three hundred seventy-six thousand, four hundred one".