1894220955 has 48 divisors (see below), whose sum is σ = 3591903744. Its totient is φ = 915819840.

The previous prime is 1894220891. The next prime is 1894220987. The reversal of 1894220955 is 5590224981.

It is a happy number.

1894220955 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1894220955 - 2⁶ = 1894220891 is a prime.

It is a super-2 number, since 2×1894220955² = 7176146052722224050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1894220955.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176452 + ... + 186878.

It is an arithmetic number, because the mean of its divisors is an integer number (74831328).

Almost surely, 2^1894220955 is an apocalyptic number.

1894220955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1894220955 is a deficient number, since it is larger than the sum of its proper divisors (1697682789).

1894220955 is a wasteful number, since it uses less digits than its factorization.

1894220955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10816 (or 10813 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1894220955 is about 43522.6487590082. The cubic root of 1894220955 is about 1237.3053161752.

The spelling of 1894220955 in words is "one billion, eight hundred ninety-four million, two hundred twenty thousand, nine hundred fifty-five".