260163890 has 16 divisors (see below), whose sum is σ = 535194432. Its totient is φ = 89199024.

The previous prime is 260163887. The next prime is 260163907. The reversal of 260163890 is 98361062.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 260163890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858244 + ... + 1858383.

It is an arithmetic number, because the mean of its divisors is an integer number (33449652).

Almost surely, 2^260163890 is an apocalyptic number.

260163890 is an abundant number, since it is smaller than the sum of its proper divisors (275030542).

260163890 is a wasteful number, since it uses less digits than its factorization.

260163890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716641.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 260163890 is about 16129.5967091555. The cubic root of 260163890 is about 638.3845079526.

The spelling of 260163890 in words is "two hundred sixty million, one hundred sixty-three thousand, eight hundred ninety".