1391919809148 has 96 divisors (see below), whose sum is σ = 4003467552000. Its totient is φ = 414644811840.

The previous prime is 1391919809143. The next prime is 1391919809153. The reversal of 1391919809148 is 8419089191931.

It is an interprime number because it is at equal distance from previous prime (1391919809143) and next prime (1391919809153).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391919809143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9859143 + ... + 9999326.

It is an arithmetic number, because the mean of its divisors is an integer number (41702787000).

Almost surely, 2^{1391919809148} is an apocalyptic number.

1391919809148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1391919809148 is an abundant number, since it is smaller than the sum of its proper divisors (2611547742852).

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

1391919809148 is a wasteful number, since it uses less digits than its factorization.

1391919809148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19858552 (or 19858544 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 63.

The spelling of 1391919809148 in words is "one trillion, three hundred ninety-one billion, nine hundred nineteen million, eight hundred nine thousand, one hundred forty-eight".