1013161555 has 16 divisors (see below), whose sum is σ = 1390336704. Its totient is φ = 694310400.

The previous prime is 1013161553. The next prime is 1013161559. The reversal of 1013161555 is 5551613101.

It is not a de Polignac number, because 1013161555 - 2¹ = 1013161553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013161553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54999 + ... + 71071.

It is an arithmetic number, because the mean of its divisors is an integer number (86896044).

Almost surely, 2^1013161555 is an apocalyptic number.

1013161555 is a deficient number, since it is larger than the sum of its proper divisors (377175149).

1013161555 is a wasteful number, since it uses less digits than its factorization.

1013161555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17886.

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 1013161555 is about 31830.1987898285. The cubic root of 1013161555 is about 1004.3680771212.

Adding to 1013161555 its reverse (5551613101), we get a palindrome (6564774656).

The spelling of 1013161555 in words is "one billion, thirteen million, one hundred sixty-one thousand, five hundred fifty-five".