1097144740 has 48 divisors (see below), whose sum is σ = 2458552320. Its totient is φ = 410054400.

The previous prime is 1097144701. The next prime is 1097144747. The reversal of 1097144740 is 474417901.

It is a self number, because there is not a number n which added to its sum of digits gives 1097144740.

It is not an unprimeable number, because it can be changed into a prime (1097144747) 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, 7965 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (51219840).

Almost surely, 2^1097144740 is an apocalyptic number.

1097144740 is a gapful number since it is divisible by the number (10) 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 1097144740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1229276160).

1097144740 is an abundant number, since it is smaller than the sum of its proper divisors (1361407580).

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

1097144740 is a wasteful number, since it uses less digits than its factorization.

1097144740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39652 (or 39650 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 1097144740 is about 33123.1752704960. The cubic root of 1097144740 is about 1031.3861815138.

The spelling of 1097144740 in words is "one billion, ninety-seven million, one hundred forty-four thousand, seven hundred forty".