1890947235642 has 32 divisors (see below), whose sum is σ = 3983997073920. Its totient is φ = 596682903600.

The previous prime is 1890947235641. The next prime is 1890947235677. The reversal of 1890947235642 is 2465327490981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1890947235641) 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, 6216484 + ... + 6513567.

It is an arithmetic number, because the mean of its divisors is an integer number (124499908560).

It is a 1-persistent number, because it is pandigital, but 2⋅1890947235642 = 3781894471284 is not.

Almost surely, 2^{1890947235642} is an apocalyptic number.

1890947235642 is an abundant number, since it is smaller than the sum of its proper divisors (2093049838278).

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

1890947235642 is a wasteful number, since it uses less digits than its factorization.

1890947235642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12731378.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 1890947235642 in words is "one trillion, eight hundred ninety billion, nine hundred forty-seven million, two hundred thirty-five thousand, six hundred forty-two".