1097745539 has 32 divisors (see below), whose sum is σ = 1339545600. Its totient is φ = 886602240.

The previous prime is 1097745529. The next prime is 1097745553. The reversal of 1097745539 is 9355477901.

It is a cyclic number.

It is not a de Polignac number, because 1097745539 - 2²⁰ = 1096696963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1097745529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1808174 + ... + 1808780.

It is an arithmetic number, because the mean of its divisors is an integer number (41860800).

Almost surely, 2^1097745539 is an apocalyptic number.

1097745539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1097745539 is a deficient number, since it is larger than the sum of its proper divisors (241800061).

1097745539 is a wasteful number, since it uses less digits than its factorization.

1097745539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 1190700, while the sum is 50.

The square root of 1097745539 is about 33132.2431929986. The cubic root of 1097745539 is about 1031.5744103135.

The spelling of 1097745539 in words is "one billion, ninety-seven million, seven hundred forty-five thousand, five hundred thirty-nine".