9051199290 has 192 divisors, whose sum is σ = 28490342400. Its totient is φ = 1947514752.

The previous prime is 9051199273. The next prime is 9051199291. The reversal of 9051199290 is 929911509.

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

It is not an unprimeable number, because it can be changed into a prime (9051199291) 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, 1948791 + ... + 1953429.

It is an arithmetic number, because the mean of its divisors is an integer number (148387200).

Almost surely, 2^9051199290 is an apocalyptic number.

9051199290 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9051199290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14245171200).

9051199290 is an abundant number, since it is smaller than the sum of its proper divisors (19439143110).

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

9051199290 is a wasteful number, since it uses less digits than its factorization.

9051199290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841 (or 4838 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 45.

The square root of 9051199290 is about 95137.7910716872. The cubic root of 9051199290 is about 2084.0207675044.

The spelling of 9051199290 in words is "nine billion, fifty-one million, one hundred ninety-nine thousand, two hundred ninety".