1326146261 has 16 divisors (see below), whose sum is σ = 1464334848. Its totient is φ = 1190952000.

The previous prime is 1326146221. The next prime is 1326146281. The reversal of 1326146261 is 1626416231.

It is a cyclic number.

It is not a de Polignac number, because 1326146261 - 2¹⁴ = 1326129877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326146221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617756 + ... + 619898.

It is an arithmetic number, because the mean of its divisors is an integer number (91520928).

Almost surely, 2^1326146261 is an apocalyptic number.

1326146261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1326146261 is a deficient number, since it is larger than the sum of its proper divisors (138188587).

1326146261 is a wasteful number, since it uses less digits than its factorization.

1326146261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812.

The product of its digits is 10368, while the sum is 32.

The square root of 1326146261 is about 36416.2911483309. The cubic root of 1326146261 is about 1098.6612531673.

The spelling of 1326146261 in words is "one billion, three hundred twenty-six million, one hundred forty-six thousand, two hundred sixty-one".