2635495380 has 672 divisors, whose sum is σ = 10576742400. Its totient is φ = 548674560.

The previous prime is 2635495351. The next prime is 2635495381. The reversal of 2635495380 is 835945362.

2635495380 is a `hidden beast` number, since 2 + 63 + 54 + 9 + 538 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2635495381) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 85015965 + ... + 85015995.

It is an arithmetic number, because the mean of its divisors is an integer number (15739200).

Almost surely, 2^2635495380 is an apocalyptic number.

2635495380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2635495380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5288371200).

2635495380 is an abundant number, since it is smaller than the sum of its proper divisors (7941247020).

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

2635495380 is a wasteful number, since it uses less digits than its factorization.

2635495380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The square root of 2635495380 is about 51337.0760756785. The cubic root of 2635495380 is about 1381.2981168990.

The spelling of 2635495380 in words is "two billion, six hundred thirty-five million, four hundred ninety-five thousand, three hundred eighty".