1491422826249 has 6 divisors (see below), whose sum is σ = 2154277415706. Its totient is φ = 994281884160.

The previous prime is 1491422826227. The next prime is 1491422826263. The reversal of 1491422826249 is 9426282241941.

1491422826249 is a `hidden beast` number, since 1 + 4 + 9 + 1 + 4 + 2 + 2 + 8 + 2 + 624 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1132430120649 + 358992705600 = 1064157^2 + 599160^2 .

It is not a de Polignac number, because 1491422826249 - 2⁵ = 1491422826217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1491422826195 and 1491422826204.

It is not an unprimeable number, because it can be changed into a prime (1491422826749) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82856823672 + ... + 82856823689.

It is an arithmetic number, because the mean of its divisors is an integer number (359046235951).

Almost surely, 2^{1491422826249} is an apocalyptic number.

It is an amenable number.

1491422826249 is a deficient number, since it is larger than the sum of its proper divisors (662854589457).

1491422826249 is a wasteful number, since it uses less digits than its factorization.

1491422826249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165713647367 (or 165713647364 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 1491422826249 in words is "one trillion, four hundred ninety-one billion, four hundred twenty-two million, eight hundred twenty-six thousand, two hundred forty-nine".