2355490391 has 16 divisors (see below), whose sum is σ = 2502678528. Its totient is φ = 2213719200.

The previous prime is 2355490381. The next prime is 2355490427. The reversal of 2355490391 is 1930945532.

It is a cyclic number.

It is not a de Polignac number, because 2355490391 - 2¹⁸ = 2355228247 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 (2355490321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139481 + ... + 155453.

It is an arithmetic number, because the mean of its divisors is an integer number (156417408).

Almost surely, 2^2355490391 is an apocalyptic number.

2355490391 is a deficient number, since it is larger than the sum of its proper divisors (147188137).

2355490391 is a wasteful number, since it uses less digits than its factorization.

2355490391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16142.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 2355490391 is about 48533.3945958862. The cubic root of 2355490391 is about 1330.5374786968.

The spelling of 2355490391 in words is "two billion, three hundred fifty-five million, four hundred ninety thousand, three hundred ninety-one".