1309154328 has 24 divisors (see below), whose sum is σ = 3545626500. Its totient is φ = 436384752.

The previous prime is 1309154323. The next prime is 1309154401. The reversal of 1309154328 is 8234519031.

1309154328 is a `hidden beast` number, since 1 + 3 + 0 + 91 + 543 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1309154328² = 3427770109042263168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1309154292 and 1309154301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309154323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9091278 + ... + 9091421.

Almost surely, 2^1309154328 is an apocalyptic number.

1309154328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1309154328 is an abundant number, since it is smaller than the sum of its proper divisors (2236472172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1309154328 is a wasteful number, since it uses less digits than its factorization.

1309154328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18182711 (or 18182704 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1309154328 is about 36182.2377417428. The cubic root of 1309154328 is about 1093.9486800632.

The spelling of 1309154328 in words is "one billion, three hundred nine million, one hundred fifty-four thousand, three hundred twenty-eight".