7494987894 has 16 divisors (see below), whose sum is σ = 15235713840. Its totient is φ = 2457372960.

The previous prime is 7494987881. The next prime is 7494987947. The reversal of 7494987894 is 4987894947.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10238689 + ... + 10239420.

It is an arithmetic number, because the mean of its divisors is an integer number (952232115).

Almost surely, 2^7494987894 is an apocalyptic number.

7494987894 is an abundant number, since it is smaller than the sum of its proper divisors (7740725946).

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

7494987894 is a wasteful number, since it uses less digits than its factorization.

7494987894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20478175.

The product of its digits is 146313216, while the sum is 69.

The square root of 7494987894 is about 86573.5981347662. The cubic root of 7494987894 is about 1956.9976849364.

The spelling of 7494987894 in words is "seven billion, four hundred ninety-four million, nine hundred eighty-seven thousand, eight hundred ninety-four".