1306872946 has 8 divisors (see below), whose sum is σ = 1960621740. Its totient is φ = 653332368.

The previous prime is 1306872883. The next prime is 1306873019. The reversal of 1306872946 is 6492786031.

It can be written as a sum of positive squares in 2 ways, for example, as 1116294921 + 190578025 = 33411^2 + 13805^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1306872896 and 1306872905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35281 + ... + 62116.

Almost surely, 2^1306872946 is an apocalyptic number.

1306872946 is a deficient number, since it is larger than the sum of its proper divisors (653748794).

1306872946 is an equidigital number, since it uses as much as digits as its factorization.

1306872946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104108.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1306872946 is about 36150.6977249402. The cubic root of 1306872946 is about 1093.3128584266.

The spelling of 1306872946 in words is "one billion, three hundred six million, eight hundred seventy-two thousand, nine hundred forty-six".