495978641 has 16 divisors (see below), whose sum is σ = 551485440. Its totient is φ = 444119760.

The previous prime is 495978631. The next prime is 495978643. The reversal of 495978641 is 146879594.

It is a cyclic number.

It is not a de Polignac number, because 495978641 - 2¹⁸ = 495716497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495978643) 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, 15536 + ... + 35118.

It is an arithmetic number, because the mean of its divisors is an integer number (34467840).

Almost surely, 2^495978641 is an apocalyptic number.

It is an amenable number.

495978641 is a deficient number, since it is larger than the sum of its proper divisors (55506799).

495978641 is a wasteful number, since it uses less digits than its factorization.

495978641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19676.

The product of its digits is 2177280, while the sum is 53.

The square root of 495978641 is about 22270.5779224519. The cubic root of 495978641 is about 791.5669593258.

The spelling of 495978641 in words is "four hundred ninety-five million, nine hundred seventy-eight thousand, six hundred forty-one".