1260156465 has 48 divisors (see below), whose sum is σ = 2212569216. Its totient is φ = 663436800.

The previous prime is 1260156463. The next prime is 1260156473. The reversal of 1260156465 is 5646510621.

1260156465 is a `hidden beast` number, since 1 + 2 + 6 + 0 + 1 + 5 + 646 + 5 = 666.

It is not a de Polignac number, because 1260156465 - 2¹ = 1260156463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1260156463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1420252 + ... + 1421138.

It is an arithmetic number, because the mean of its divisors is an integer number (46095192).

Almost surely, 2^1260156465 is an apocalyptic number.

1260156465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1260156465 is a deficient number, since it is larger than the sum of its proper divisors (952412751).

1260156465 is a wasteful number, since it uses less digits than its factorization.

1260156465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1260156465 is about 35498.6825811888. The cubic root of 1260156465 is about 1080.1270040971.

It can be divided in two parts, 1260156 and 465, that added together give a palindrome (1260621).

The spelling of 1260156465 in words is "one billion, two hundred sixty million, one hundred fifty-six thousand, four hundred sixty-five".