1097615509 has 8 divisors (see below), whose sum is σ = 1102907520. Its totient is φ = 1092332496.

The previous prime is 1097615473. The next prime is 1097615569. The reversal of 1097615509 is 9055167901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1097615509 - 2⁷ = 1097615381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097615569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408679 + ... + 411355.

It is an arithmetic number, because the mean of its divisors is an integer number (137863440).

Almost surely, 2^1097615509 is an apocalyptic number.

It is an amenable number.

1097615509 is a deficient number, since it is larger than the sum of its proper divisors (5292011).

1097615509 is a wasteful number, since it uses less digits than its factorization.

1097615509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499.

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 1097615509 is about 33130.2808469835. The cubic root of 1097615509 is about 1031.5336780696.

The spelling of 1097615509 in words is "one billion, ninety-seven million, six hundred fifteen thousand, five hundred nine".