1308189345 has 16 divisors (see below), whose sum is σ = 2094196032. Its totient is φ = 697336640.

The previous prime is 1308189341. The next prime is 1308189401. The reversal of 1308189345 is 5439818031.

It is not a de Polignac number, because 1308189345 - 2² = 1308189341 is a prime.

It is a super-2 number, since 2×1308189345² = 3422718724743058050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1308189297 and 1308189306.

It is not an unprimeable number, because it can be changed into a prime (1308189341) 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, 8275 + ... + 51815.

It is an arithmetic number, because the mean of its divisors is an integer number (130887252).

Almost surely, 2^1308189345 is an apocalyptic number.

1308189345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1308189345 is a deficient number, since it is larger than the sum of its proper divisors (786006687).

1308189345 is a wasteful number, since it uses less digits than its factorization.

1308189345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45552.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1308189345 is about 36168.9002459295. The cubic root of 1308189345 is about 1093.6798293159.

It can be divided in two parts, 1308 and 189345, that added together give a triangular number (190653 = T₆₁₇).

The spelling of 1308189345 in words is "one billion, three hundred eight million, one hundred eighty-nine thousand, three hundred forty-five".