1902228389 has 8 divisors (see below), whose sum is σ = 1921985280. Its totient is φ = 1882566000.

The previous prime is 1902228343. The next prime is 1902228421. The reversal of 1902228389 is 9838222091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1902228389 - 2¹² = 1902224293 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 (1902228319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17204 + ... + 64034.

It is an arithmetic number, because the mean of its divisors is an integer number (240248160).

Almost surely, 2^1902228389 is an apocalyptic number.

It is an amenable number.

1902228389 is a deficient number, since it is larger than the sum of its proper divisors (19756891).

1902228389 is a wasteful number, since it uses less digits than its factorization.

1902228389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47251.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1902228389 is about 43614.5433198606. The cubic root of 1902228389 is about 1239.0463507468.

The spelling of 1902228389 in words is "one billion, nine hundred two million, two hundred twenty-eight thousand, three hundred eighty-nine".