1097761895 has 4 divisors (see below), whose sum is σ = 1317314280. Its totient is φ = 878209512.

The previous prime is 1097761883. The next prime is 1097761897. The reversal of 1097761895 is 5981677901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5981677901 = 311 ⋅19233691.

It is a cyclic number.

It is not a de Polignac number, because 1097761895 - 2¹² = 1097757799 is a prime.

It is a super-2 number, since 2×1097761895² = 2410162356227982050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097761897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109776185 + ... + 109776194.

It is an arithmetic number, because the mean of its divisors is an integer number (329328570).

Almost surely, 2^1097761895 is an apocalyptic number.

1097761895 is a deficient number, since it is larger than the sum of its proper divisors (219552385).

1097761895 is an equidigital number, since it uses as much as digits as its factorization.

1097761895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219552384.

The product of its (nonzero) digits is 952560, while the sum is 53.

The square root of 1097761895 is about 33132.4900211258. The cubic root of 1097761895 is about 1031.5795336463.

The spelling of 1097761895 in words is "one billion, ninety-seven million, seven hundred sixty-one thousand, eight hundred ninety-five".