954920138509 has 2 divisors, whose sum is σ = 954920138510. Its totient is φ = 954920138508.

The previous prime is 954920138503. The next prime is 954920138519. The reversal of 954920138509 is 905831029459.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 792772982884 + 162147155625 = 890378^2 + 402675^2 .

It is a cyclic number.

It is not a de Polignac number, because 954920138509 - 2²⁵ = 954886584077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 954920138509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (954920138503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477460069254 + 477460069255.

It is an arithmetic number, because the mean of its divisors is an integer number (477460069255).

Almost surely, 2^954920138509 is an apocalyptic number.

It is an amenable number.

954920138509 is a deficient number, since it is larger than the sum of its proper divisors (1).

954920138509 is an equidigital number, since it uses as much as digits as its factorization.

954920138509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 55.

The spelling of 954920138509 in words is "nine hundred fifty-four billion, nine hundred twenty million, one hundred thirty-eight thousand, five hundred nine".