1001899602 has 192 divisors, whose sum is σ = 2630983680. Its totient is φ = 274428000.

The previous prime is 1001899601. The next prime is 1001899603. The reversal of 1001899602 is 2069981001.

It is an interprime number because it is at equal distance from previous prime (1001899601) and next prime (1001899603).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001899601) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14111227 + ... + 14111297.

It is an arithmetic number, because the mean of its divisors is an integer number (13703040).

Almost surely, 2^1001899602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001899602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315491840).

1001899602 is an abundant number, since it is smaller than the sum of its proper divisors (1629084078).

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

1001899602 is a wasteful number, since it uses less digits than its factorization.

1001899602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1001899602 is about 31652.7976962543. The cubic root of 1001899602 is about 1000.6328001462.

The spelling of 1001899602 in words is "one billion, one million, eight hundred ninety-nine thousand, six hundred two".