1378099811 has 12 divisors (see below), whose sum is σ = 1586676024. Its totient is φ = 1186876800.

The previous prime is 1378099771. The next prime is 1378099813. The reversal of 1378099811 is 1189908731.

It is a de Polignac number, because none of the positive numbers 2^k-1378099811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378099813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169550 + ... + 177491.

It is an arithmetic number, because the mean of its divisors is an integer number (132223002).

Almost surely, 2^1378099811 is an apocalyptic number.

1378099811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1378099811 is a deficient number, since it is larger than the sum of its proper divisors (208576213).

1378099811 is a wasteful number, since it uses less digits than its factorization.

1378099811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347090 (or 347071 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 47.

The square root of 1378099811 is about 37122.7667476442. The cubic root of 1378099811 is about 1112.8250445403.

The spelling of 1378099811 in words is "one billion, three hundred seventy-eight million, ninety-nine thousand, eight hundred eleven".