1899355164345 has 12 divisors (see below), whose sum is σ = 3292215618276. Its totient is φ = 1012989420960.

The previous prime is 1899355164293. The next prime is 1899355164353. The reversal of 1899355164345 is 5434615539981.

1899355164345 is a `hidden beast` number, since 1 + 8 + 9 + 9 + 35 + 516 + 43 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 814130853264 + 1085224311081 = 902292^2 + 1041741^2 .

It is not a de Polignac number, because 1899355164345 - 2⁹ = 1899355163833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21103946226 + ... + 21103946315.

It is an arithmetic number, because the mean of its divisors is an integer number (274351301523).

Almost surely, 2^{1899355164345} is an apocalyptic number.

1899355164345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1899355164345 is a deficient number, since it is larger than the sum of its proper divisors (1392860453931).

1899355164345 is a wasteful number, since it uses less digits than its factorization.

1899355164345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42207892552 (or 42207892549 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 63.

The spelling of 1899355164345 in words is "one trillion, eight hundred ninety-nine billion, three hundred fifty-five million, one hundred sixty-four thousand, three hundred forty-five".