1464126991 has 4 divisors (see below), whose sum is σ = 1464816184. Its totient is φ = 1463437800.

The previous prime is 1464126971. The next prime is 1464127001. The reversal of 1464126991 is 1996214641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1996214641 = 38821 ⋅51421.

It is a cyclic number.

It is not a de Polignac number, because 1464126991 - 2⁷ = 1464126863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1464126971) 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, 341400 + ... + 345661.

It is an arithmetic number, because the mean of its divisors is an integer number (366204046).

Almost surely, 2^1464126991 is an apocalyptic number.

1464126991 is a deficient number, since it is larger than the sum of its proper divisors (689193).

1464126991 is an equidigital number, since it uses as much as digits as its factorization.

1464126991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689192.

The product of its digits is 93312, while the sum is 43.

The square root of 1464126991 is about 38263.9123849091. The cubic root of 1464126991 is about 1135.5151047384.

The spelling of 1464126991 in words is "one billion, four hundred sixty-four million, one hundred twenty-six thousand, nine hundred ninety-one".