1161540422 has 48 divisors (see below), whose sum is σ = 2107123200. Its totient is φ = 470186976.

The previous prime is 1161540361. The next prime is 1161540427. The reversal of 1161540422 is 2240451611.

It is a junction number, because it is equal to n+sod(n) for n = 1161540391 and 1161540400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161540427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552329 + ... + 554427.

It is an arithmetic number, because the mean of its divisors is an integer number (43898400).

Almost surely, 2^1161540422 is an apocalyptic number.

1161540422 is a deficient number, since it is larger than the sum of its proper divisors (945582778).

1161540422 is a wasteful number, since it uses less digits than its factorization.

1161540422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1161540422 is about 34081.3794028352. The cubic root of 1161540422 is about 1051.1824689081.

The spelling of 1161540422 in words is "one billion, one hundred sixty-one million, five hundred forty thousand, four hundred twenty-two".