1850935916761 has 4 divisors (see below), whose sum is σ = 1851743130532. Its totient is φ = 1850128702992.

The previous prime is 1850935916723. The next prime is 1850935916771. The reversal of 1850935916761 is 1676195390581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1189244775625 + 661691141136 = 1090525^2 + 813444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1850935916761 is a prime.

It is a super-2 number, since 2×1850935916761² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1850935916761.

It is not an unprimeable number, because it can be changed into a prime (1850935916771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403603446 + ... + 403608031.

It is an arithmetic number, because the mean of its divisors is an integer number (462935782633).

Almost surely, 2^{1850935916761} is an apocalyptic number.

It is an amenable number.

1850935916761 is a deficient number, since it is larger than the sum of its proper divisors (807213771).

1850935916761 is an equidigital number, since it uses as much as digits as its factorization.

1850935916761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807213770.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 1850935916761 in words is "one trillion, eight hundred fifty billion, nine hundred thirty-five million, nine hundred sixteen thousand, seven hundred sixty-one".