1097951161 has 16 divisors (see below), whose sum is σ = 1172496384. Its totient is φ = 1025734864.

The previous prime is 1097951143. The next prime is 1097951167. The reversal of 1097951161 is 1611597901.

It is not a de Polignac number, because 1097951161 - 2²³ = 1089562553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097951167) 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, 802500 + ... + 803866.

It is an arithmetic number, because the mean of its divisors is an integer number (73281024).

Almost surely, 2^1097951161 is an apocalyptic number.

It is an amenable number.

1097951161 is a deficient number, since it is larger than the sum of its proper divisors (74545223).

1097951161 is a wasteful number, since it uses less digits than its factorization.

1097951161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180.

The product of its (nonzero) digits is 17010, while the sum is 40.

The square root of 1097951161 is about 33135.3460974833. The cubic root of 1097951161 is about 1031.6388153884.

The spelling of 1097951161 in words is "one billion, ninety-seven million, nine hundred fifty-one thousand, one hundred sixty-one".