1491952434811 has 4 divisors (see below), whose sum is σ = 1491999491232. Its totient is φ = 1491905378392.

The previous prime is 1491952434799. The next prime is 1491952434829. The reversal of 1491952434811 is 1184342591941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1491952434811 - 2⁵ = 1491952434779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1491952432811) 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, 23480620 + ... + 23544073.

It is an arithmetic number, because the mean of its divisors is an integer number (372999872808).

Almost surely, 2^{1491952434811} is an apocalyptic number.

1491952434811 is a deficient number, since it is larger than the sum of its proper divisors (47056421).

1491952434811 is an equidigital number, since it uses as much as digits as its factorization.

1491952434811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47056420.

The product of its digits is 1244160, while the sum is 52.

The spelling of 1491952434811 in words is "one trillion, four hundred ninety-one billion, nine hundred fifty-two million, four hundred thirty-four thousand, eight hundred eleven".