2549381730 has 32 divisors (see below), whose sum is σ = 6992590464. Its totient is φ = 582715776.

The previous prime is 2549381729. The next prime is 2549381743. The reversal of 2549381730 is 371839452.

It is a super-7 number, since 7×2549381730⁷ (a number of 67 digits) contains 7777777 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6069747 + ... + 6070166.

It is an arithmetic number, because the mean of its divisors is an integer number (218518452).

Almost surely, 2^2549381730 is an apocalyptic number.

2549381730 is an abundant number, since it is smaller than the sum of its proper divisors (4443208734).

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

2549381730 is a wasteful number, since it uses less digits than its factorization.

2549381730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12139930.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 2549381730 is about 50491.4025354812. The cubic root of 2549381730 is about 1366.0867835997.

The spelling of 2549381730 in words is "two billion, five hundred forty-nine million, three hundred eighty-one thousand, seven hundred thirty".