1156321016 has 16 divisors (see below), whose sum is σ = 2169086640. Its totient is φ = 577897920.

The previous prime is 1156321009. The next prime is 1156321037. The reversal of 1156321016 is 6101236511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13436 + ... + 49931.

It is an arithmetic number, because the mean of its divisors is an integer number (135567915).

Almost surely, 2^1156321016 is an apocalyptic number.

It is an amenable number.

1156321016 is a deficient number, since it is larger than the sum of its proper divisors (1012765624).

1156321016 is a wasteful number, since it uses less digits than its factorization.

1156321016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65654 (or 65650 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1156321016 is about 34004.7204958370. The cubic root of 1156321016 is about 1049.6056012328.

Adding to 1156321016 its reverse (6101236511), we get a palindrome (7257557527).

The spelling of 1156321016 in words is "one billion, one hundred fifty-six million, three hundred twenty-one thousand, sixteen".