1900000902 has 8 divisors (see below), whose sum is σ = 3800001816. Its totient is φ = 633333632.

The previous prime is 1900000901. The next prime is 1900000919. The reversal of 1900000902 is 2090000091.

It is a happy number.

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

1900000902 is an admirable number.

It is a super-2 number, since 2×1900000902² = 7220006855201627208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900000901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158333403 + ... + 158333414.

It is an arithmetic number, because the mean of its divisors is an integer number (475000227).

Almost surely, 2^1900000902 is an apocalyptic number.

1900000902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1900000902 is a wasteful number, since it uses less digits than its factorization.

1900000902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316666822.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1900000902 is about 43588.9997820551. Note that the first 3 decimals coincide. The cubic root of 1900000902 is about 1238.5625256272.

Adding to 1900000902 its reverse (2090000091), we get a palindrome (3990000993).

The spelling of 1900000902 in words is "one billion, nine hundred million, nine hundred two", and thus it is an aban number.