1802145385331 has 2 divisors, whose sum is σ = 1802145385332. Its totient is φ = 1802145385330.

The previous prime is 1802145385303. The next prime is 1802145385361. The reversal of 1802145385331 is 1335835412081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1802145385331 - 2²² = 1802141191027 is a prime.

It is a super-2 number, since 2×1802145385331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1802145385361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901072692665 + 901072692666.

It is an arithmetic number, because the mean of its divisors is an integer number (901072692666).

Almost surely, 2^{1802145385331} is an apocalyptic number.

1802145385331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1802145385331 is an equidigital number, since it uses as much as digits as its factorization.

1802145385331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 1802145385331 in words is "one trillion, eight hundred two billion, one hundred forty-five million, three hundred eighty-five thousand, three hundred thirty-one".