10115897490 has 192 divisors, whose sum is σ = 28851137280. Its totient is φ = 2517419520.

The previous prime is 10115897461. The next prime is 10115897507. The reversal of 10115897490 is 9479851101.

It is a happy number.

10115897490 is a `hidden beast` number, since 1 + 0 + 1 + 158 + 9 + 7 + 490 = 666.

10115897490 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11481850 + ... + 11482730.

It is an arithmetic number, because the mean of its divisors is an integer number (150266340).

Almost surely, 2^10115897490 is an apocalyptic number.

10115897490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10115897490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14425568640).

10115897490 is an abundant number, since it is smaller than the sum of its proper divisors (18735239790).

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

10115897490 is a wasteful number, since it uses less digits than its factorization.

10115897490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 10115897490 in words is "ten billion, one hundred fifteen million, eight hundred ninety-seven thousand, four hundred ninety".