1977162345 has 16 divisors (see below), whose sum is σ = 3514955520. Its totient is φ = 1054486512.

The previous prime is 1977162331. The next prime is 1977162367. The reversal of 1977162345 is 5432617791.

1977162345 is a `hidden beast` number, since 19 + 7 + 7 + 1 + 623 + 4 + 5 = 666.

It is not a de Polignac number, because 1977162345 - 2⁶ = 1977162281 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1977162345.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7322689 + ... + 7322958.

It is an arithmetic number, because the mean of its divisors is an integer number (219684720).

Almost surely, 2^1977162345 is an apocalyptic number.

1977162345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1977162345 is a deficient number, since it is larger than the sum of its proper divisors (1537793175).

1977162345 is a wasteful number, since it uses less digits than its factorization.

1977162345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14645661 (or 14645655 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 1977162345 is about 44465.2937131871. The cubic root of 1977162345 is about 1255.1070727628.

The spelling of 1977162345 in words is "one billion, nine hundred seventy-seven million, one hundred sixty-two thousand, three hundred forty-five".