1346651999 has 16 divisors (see below), whose sum is σ = 1767310080. Its totient is φ = 994109760.

The previous prime is 1346651989. The next prime is 1346652023. The reversal of 1346651999 is 9991566431.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1346651999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1346651999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1346651939) 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, 458774 + ... + 461699.

It is an arithmetic number, because the mean of its divisors is an integer number (110456880).

Almost surely, 2^1346651999 is an apocalyptic number.

1346651999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1346651999 is a deficient number, since it is larger than the sum of its proper divisors (420658081).

1346651999 is a wasteful number, since it uses less digits than its factorization.

1346651999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920510.

The product of its digits is 1574640, while the sum is 53.

The square root of 1346651999 is about 36696.7573363097. The cubic root of 1346651999 is about 1104.2950531892.

The spelling of 1346651999 in words is "one billion, three hundred forty-six million, six hundred fifty-one thousand, nine hundred ninety-nine".