1156285641 has 16 divisors (see below), whose sum is σ = 1854694400. Its totient is φ = 625958928.

The previous prime is 1156285639. The next prime is 1156285661. The reversal of 1156285641 is 1465826511.

It is not a de Polignac number, because 1156285641 - 2¹ = 1156285639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156285641.

It is not an unprimeable number, because it can be changed into a prime (1156285621) 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, 1448581 + ... + 1449378.

It is an arithmetic number, because the mean of its divisors is an integer number (115918400).

Almost surely, 2^1156285641 is an apocalyptic number.

It is an amenable number.

1156285641 is a deficient number, since it is larger than the sum of its proper divisors (698408759).

1156285641 is a wasteful number, since it uses less digits than its factorization.

1156285641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897988.

The product of its digits is 57600, while the sum is 39.

The square root of 1156285641 is about 34004.2003434870. The cubic root of 1156285641 is about 1049.5948976951.

The spelling of 1156285641 in words is "one billion, one hundred fifty-six million, two hundred eighty-five thousand, six hundred forty-one".