1534820149779 has 16 divisors (see below), whose sum is σ = 2419420926720. Its totient is φ = 846797323680.

The previous prime is 1534820149763. The next prime is 1534820149787. The reversal of 1534820149779 is 9779410284351.

It is not a de Polignac number, because 1534820149779 - 2⁴ = 1534820149763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1534820141779) 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, 1260114457 + ... + 1260115674.

It is an arithmetic number, because the mean of its divisors is an integer number (151213807920).

Almost surely, 2^{1534820149779} is an apocalyptic number.

1534820149779 is a deficient number, since it is larger than the sum of its proper divisors (884600776941).

1534820149779 is a wasteful number, since it uses less digits than its factorization.

1534820149779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520230170.

The product of its (nonzero) digits is 15240960, while the sum is 60.

The spelling of 1534820149779 in words is "one trillion, five hundred thirty-four billion, eight hundred twenty million, one hundred forty-nine thousand, seven hundred seventy-nine".