1494100891 has 4 divisors (see below), whose sum is σ = 1572737800. Its totient is φ = 1415463984.

The previous prime is 1494100889. The next prime is 1494100901. The reversal of 1494100891 is 1980014941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1494100891 - 2¹ = 1494100889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1494100891.

It is not an unprimeable number, because it can be changed into a prime (1494100801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39318426 + ... + 39318463.

It is an arithmetic number, because the mean of its divisors is an integer number (393184450).

Almost surely, 2^1494100891 is an apocalyptic number.

1494100891 is a deficient number, since it is larger than the sum of its proper divisors (78636909).

1494100891 is an equidigital number, since it uses as much as digits as its factorization.

1494100891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78636908.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1494100891 is about 38653.6012681872. The cubic root of 1494100891 is about 1143.2116501514.

The spelling of 1494100891 in words is "one billion, four hundred ninety-four million, one hundred thousand, eight hundred ninety-one".