3428863978 has 4 divisors (see below), whose sum is σ = 5143295970. Its totient is φ = 1714431988.

The previous prime is 3428863973. The next prime is 3428863993. The reversal of 3428863978 is 8793688243.

3428863978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3412078569 + 16785409 = 58413^2 + 4097^2 .

It is not an unprimeable number, because it can be changed into a prime (3428863973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 857215993 + ... + 857215996.

Almost surely, 2^3428863978 is an apocalyptic number.

3428863978 is a deficient number, since it is larger than the sum of its proper divisors (1714431992).

3428863978 is a wasteful number, since it uses less digits than its factorization.

3428863978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714431991.

The product of its digits is 13934592, while the sum is 58.

The square root of 3428863978 is about 58556.5024399511. The cubic root of 3428863978 is about 1507.9377690455.

The spelling of 3428863978 in words is "three billion, four hundred twenty-eight million, eight hundred sixty-three thousand, nine hundred seventy-eight".