1262116155 has 16 divisors (see below), whose sum is σ = 2019995424. Its totient is φ = 672925440.

The previous prime is 1262116129. The next prime is 1262116171. The reversal of 1262116155 is 5516112621.

It is not a de Polignac number, because 1262116155 - 2⁹ = 1262115643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48015 + ... + 69495.

It is an arithmetic number, because the mean of its divisors is an integer number (126249714).

Almost surely, 2^1262116155 is an apocalyptic number.

1262116155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1262116155 is a deficient number, since it is larger than the sum of its proper divisors (757879269).

1262116155 is a wasteful number, since it uses less digits than its factorization.

1262116155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25406.

The product of its digits is 3600, while the sum is 30.

The square root of 1262116155 is about 35526.2741502680. The cubic root of 1262116155 is about 1080.6866218506.

Adding to 1262116155 its reverse (5516112621), we get a palindrome (6778228776).

The spelling of 1262116155 in words is "one billion, two hundred sixty-two million, one hundred sixteen thousand, one hundred fifty-five".