1161542270 has 16 divisors (see below), whose sum is σ = 2389458528. Its totient is φ = 398243040.

The previous prime is 1161542267. The next prime is 1161542287. The reversal of 1161542270 is 722451611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8296661 + ... + 8296800.

It is an arithmetic number, because the mean of its divisors is an integer number (149341158).

Almost surely, 2^1161542270 is an apocalyptic number.

1161542270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161542270 is an abundant number, since it is smaller than the sum of its proper divisors (1227916258).

1161542270 is a wasteful number, since it uses less digits than its factorization.

1161542270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16593475.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1161542270 is about 34081.4065144031. The cubic root of 1161542270 is about 1051.1830263817.

Adding to 1161542270 its reverse (722451611), we get a palindrome (1883993881).

The spelling of 1161542270 in words is "one billion, one hundred sixty-one million, five hundred forty-two thousand, two hundred seventy".