1864450266 has 32 divisors (see below), whose sum is σ = 4269144960. Its totient is φ = 531757056.

The previous prime is 1864450253. The next prime is 1864450309. The reversal of 1864450266 is 6620544681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15111 + ... + 62906.

It is an arithmetic number, because the mean of its divisors is an integer number (133410780).

Almost surely, 2^1864450266 is an apocalyptic number.

1864450266 is an abundant number, since it is smaller than the sum of its proper divisors (2404694694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1864450266 is a wasteful number, since it uses less digits than its factorization.

1864450266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78598.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 1864450266 is about 43179.2805173963. The cubic root of 1864450266 is about 1230.7889855004.

The spelling of 1864450266 in words is "one billion, eight hundred sixty-four million, four hundred fifty thousand, two hundred sixty-six".