3819778497 has 6 divisors (see below), whose sum is σ = 5517457842. Its totient is φ = 2546518992.

The previous prime is 3819778493. The next prime is 3819778499. The reversal of 3819778497 is 7948779183.

3819778497 is a `hidden beast` number, since 381 + 97 + 7 + 84 + 97 = 666.

3819778497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3764558736 + 55219761 = 61356^2 + 7431^2 .

It is not a de Polignac number, because 3819778497 - 2² = 3819778493 is a prime.

It is a super-2 number, since 2×3819778497² = 29181415532287158018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3819778493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212209908 + ... + 212209925.

It is an arithmetic number, because the mean of its divisors is an integer number (919576307).

Almost surely, 2^3819778497 is an apocalyptic number.

It is an amenable number.

3819778497 is a deficient number, since it is larger than the sum of its proper divisors (1697679345).

3819778497 is a wasteful number, since it uses less digits than its factorization.

3819778497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424419839 (or 424419836 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The square root of 3819778497 is about 61804.3566182838. The cubic root of 3819778497 is about 1563.1934496532.

The spelling of 3819778497 in words is "three billion, eight hundred nineteen million, seven hundred seventy-eight thousand, four hundred ninety-seven".