906131928749 has 4 divisors (see below), whose sum is σ = 914445065820. Its totient is φ = 897818791680.

The previous prime is 906131928719. The next prime is 906131928761. The reversal of 906131928749 is 947829131609.

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

It can be written as a sum of positive squares in 2 ways, for example, as 527303988649 + 378827940100 = 726157^2 + 615490^2 .

It is a cyclic number.

It is not a de Polignac number, because 906131928749 - 2¹² = 906131924653 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 (906131928719) 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, 4156568372 + ... + 4156568589.

It is an arithmetic number, because the mean of its divisors is an integer number (228611266455).

Almost surely, 2^906131928749 is an apocalyptic number.

It is an amenable number.

906131928749 is a deficient number, since it is larger than the sum of its proper divisors (8313137071).

906131928749 is a wasteful number, since it uses less digits than its factorization.

906131928749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313137070.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 906131928749 in words is "nine hundred six billion, one hundred thirty-one million, nine hundred twenty-eight thousand, seven hundred forty-nine".