1140201491 has 32 divisors (see below), whose sum is σ = 1372896000. Its totient is φ = 933252480.

The previous prime is 1140201481. The next prime is 1140201499. The reversal of 1140201491 is 1941020411.

It is a cyclic number.

It is not a de Polignac number, because 1140201491 - 2⁶ = 1140201427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140201499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1256660 + ... + 1257566.

It is an arithmetic number, because the mean of its divisors is an integer number (42903000).

Almost surely, 2^1140201491 is an apocalyptic number.

1140201491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1140201491 is a deficient number, since it is larger than the sum of its proper divisors (232694509).

1140201491 is a wasteful number, since it uses less digits than its factorization.

1140201491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1140201491 is about 33766.8697246280. The cubic root of 1140201491 is about 1044.7054689129.

It can be divided in two parts, 114020 and 1491, that added together give a palindrome (115511).

The spelling of 1140201491 in words is "one billion, one hundred forty million, two hundred one thousand, four hundred ninety-one".