1891451045298 has 32 divisors (see below), whose sum is σ = 4005610246080. Its totient is φ = 593369072640.

The previous prime is 1891451045291. The next prime is 1891451045317. The reversal of 1891451045298 is 8925401541981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1891451045291) 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, 1857738 + ... + 2689626.

It is an arithmetic number, because the mean of its divisors is an integer number (125175320190).

Almost surely, 2^{1891451045298} is an apocalyptic number.

1891451045298 is an abundant number, since it is smaller than the sum of its proper divisors (2114159200782).

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

1891451045298 is a wasteful number, since it uses less digits than its factorization.

1891451045298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854202.

The product of its (nonzero) digits is 4147200, while the sum is 57.

The spelling of 1891451045298 in words is "one trillion, eight hundred ninety-one billion, four hundred fifty-one million, forty-five thousand, two hundred ninety-eight".