2445742540 has 48 divisors (see below), whose sum is σ = 5298348384. Its totient is φ = 947865600.

The previous prime is 2445742531. The next prime is 2445742547. The reversal of 2445742540 is 452475442.

It is a self number, because there is not a number n which added to its sum of digits gives 2445742540.

It is not an unprimeable number, because it can be changed into a prime (2445742547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66780 + ... + 96700.

It is an arithmetic number, because the mean of its divisors is an integer number (110382258).

Almost surely, 2^2445742540 is an apocalyptic number.

2445742540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2445742540 is an abundant number, since it is smaller than the sum of its proper divisors (2852605844).

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

2445742540 is a wasteful number, since it uses less digits than its factorization.

2445742540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30058 (or 30056 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 37.

The square root of 2445742540 is about 49454.4491426201. The cubic root of 2445742540 is about 1347.3184153917.

The spelling of 2445742540 in words is "two billion, four hundred forty-five million, seven hundred forty-two thousand, five hundred forty".