11420000491 has 8 divisors (see below), whose sum is σ = 11502837344. Its totient is φ = 11337408000.

The previous prime is 11420000489. The next prime is 11420000497. The reversal of 11420000491 is 19400002411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 11-Lehmer number, since φ(11420000491) divides (11420000491-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 11420000491 - 2¹ = 11420000489 is a prime.

It is a super-2 number, since 2×11420000491² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11420000497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33241 + ... + 154741.

It is an arithmetic number, because the mean of its divisors is an integer number (1437854668).

Almost surely, 2^11420000491 is an apocalyptic number.

11420000491 is a deficient number, since it is larger than the sum of its proper divisors (82836853).

11420000491 is a wasteful number, since it uses less digits than its factorization.

11420000491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122181.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 11420000491 in words is "eleven billion, four hundred twenty million, four hundred ninety-one", and thus it is an aban number.