1890340320344 has 64 divisors (see below), whose sum is σ = 4353022632960. Its totient is φ = 751109736960.

The previous prime is 1890340320269. The next prime is 1890340320347. The reversal of 1890340320344 is 4430230430981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890340320347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14754512 + ... + 14882079.

It is an arithmetic number, because the mean of its divisors is an integer number (68015978640).

Almost surely, 2^{1890340320344} is an apocalyptic number.

1890340320344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1890340320344 is an abundant number, since it is smaller than the sum of its proper divisors (2462682312616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1890340320344 is a wasteful number, since it uses less digits than its factorization.

1890340320344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29636688 (or 29636684 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 1890340320344 in words is "one trillion, eight hundred ninety billion, three hundred forty million, three hundred twenty thousand, three hundred forty-four".