2491189470 has 96 divisors (see below), whose sum is σ = 8075358720. Its totient is φ = 517648320.

The previous prime is 2491189453. The next prime is 2491189487. The reversal of 2491189470 is 749811942.

It is a happy number.

2491189470 is a `hidden beast` number, since 2 + 491 + 1 + 8 + 94 + 70 = 666.

2491189470 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2491189453) and next prime (2491189487).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172810 + ... + 186669.

It is an arithmetic number, because the mean of its divisors is an integer number (84118320).

Almost surely, 2^2491189470 is an apocalyptic number.

2491189470 is an abundant number, since it is smaller than the sum of its proper divisors (5584169250).

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

2491189470 is a wasteful number, since it uses less digits than its factorization.

2491189470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359510 (or 359507 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2491189470 is about 49911.8169374748. The cubic root of 2491189470 is about 1355.6125678068.

The spelling of 2491189470 in words is "two billion, four hundred ninety-one million, one hundred eighty-nine thousand, four hundred seventy".