1899442046923 has 8 divisors (see below), whose sum is σ = 1946346909696. Its totient is φ = 1852564660800.

The previous prime is 1899442046903. The next prime is 1899442046927. The reversal of 1899442046923 is 3296402449981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1899442046923 is a prime.

It is a super-2 number, since 2×1899442046923² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1899442046927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6729163 + ... + 7005748.

It is an arithmetic number, because the mean of its divisors is an integer number (243293363712).

Almost surely, 2^{1899442046923} is an apocalyptic number.

1899442046923 is a deficient number, since it is larger than the sum of its proper divisors (46904862773).

1899442046923 is a wasteful number, since it uses less digits than its factorization.

1899442046923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13738325.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 1899442046923 in words is "one trillion, eight hundred ninety-nine billion, four hundred forty-two million, forty-six thousand, nine hundred twenty-three".