1097459919 has 12 divisors (see below), whose sum is σ = 1594078200. Its totient is φ = 727551504.

The previous prime is 1097459911. The next prime is 1097459941. The reversal of 1097459919 is 9199547901.

1097459919 is a `hidden beast` number, since 10 + 97 + 459 + 91 + 9 = 666.

1097459919 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1097459919 - 2³ = 1097459911 is a prime.

It is a super-2 number, since 2×1097459919² = 2408836547622973122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097459911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339004 + ... + 342225.

It is an arithmetic number, because the mean of its divisors is an integer number (132839850).

Almost surely, 2^1097459919 is an apocalyptic number.

1097459919 is a deficient number, since it is larger than the sum of its proper divisors (496618281).

1097459919 is a wasteful number, since it uses less digits than its factorization.

1097459919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681414 (or 681411 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 54.

The square root of 1097459919 is about 33127.9326098083. The cubic root of 1097459919 is about 1031.4849348598.

The spelling of 1097459919 in words is "one billion, ninety-seven million, four hundred fifty-nine thousand, nine hundred nineteen".