1263232155 has 8 divisors (see below), whose sum is σ = 2021171472. Its totient is φ = 673723808.

The previous prime is 1263232129. The next prime is 1263232169. The reversal of 1263232155 is 5512323621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1263232155 - 2¹⁹ = 1262707867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42107724 + ... + 42107753.

It is an arithmetic number, because the mean of its divisors is an integer number (252646434).

Almost surely, 2^1263232155 is an apocalyptic number.

1263232155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1263232155 is a deficient number, since it is larger than the sum of its proper divisors (757939317).

1263232155 is an equidigital number, since it uses as much as digits as its factorization.

1263232155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84215485.

The product of its digits is 10800, while the sum is 30.

The square root of 1263232155 is about 35541.9773648006. The cubic root of 1263232155 is about 1081.0050529147.

Adding to 1263232155 its reverse (5512323621), we get a palindrome (6775555776).

It can be divided in two parts, 126 and 3232155, that multiplied together give a triangular number (407251530 = T₂₈₅₃₉).

The spelling of 1263232155 in words is "one billion, two hundred sixty-three million, two hundred thirty-two thousand, one hundred fifty-five".