1934077815 has 12 divisors (see below), whose sum is σ = 3352401624. Its totient is φ = 1031508144.

The previous prime is 1934077813. The next prime is 1934077861. The reversal of 1934077815 is 5187704391.

It is not a de Polignac number, because 1934077815 - 2¹ = 1934077813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 42979507 = 1934077815 / (1 + 9 + 3 + 4 + 0 + 7 + 7 + 8 + 1 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1934077813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21489709 + ... + 21489798.

It is an arithmetic number, because the mean of its divisors is an integer number (279366802).

Almost surely, 2^1934077815 is an apocalyptic number.

1934077815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1934077815 is a deficient number, since it is larger than the sum of its proper divisors (1418323809).

1934077815 is a wasteful number, since it uses less digits than its factorization.

1934077815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42979518 (or 42979515 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 1934077815 is about 43978.1515641574. The cubic root of 1934077815 is about 1245.9233195281.

The spelling of 1934077815 in words is "one billion, nine hundred thirty-four million, seventy-seven thousand, eight hundred fifteen".