1855950453431 has 2 divisors, whose sum is σ = 1855950453432. Its totient is φ = 1855950453430.

The previous prime is 1855950453421. The next prime is 1855950453451. The reversal of 1855950453431 is 1343540595581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1855950453431 - 2⁶ = 1855950453367 is a prime.

It is a super-2 number, since 2×1855950453431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855950453421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927975226715 + 927975226716.

It is an arithmetic number, because the mean of its divisors is an integer number (927975226716).

Almost surely, 2^{1855950453431} is an apocalyptic number.

1855950453431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855950453431 is an equidigital number, since it uses as much as digits as its factorization.

1855950453431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 53.

The spelling of 1855950453431 in words is "one trillion, eight hundred fifty-five billion, nine hundred fifty million, four hundred fifty-three thousand, four hundred thirty-one".