1378056066 has 32 divisors (see below), whose sum is σ = 2777156928. Its totient is φ = 455855040.

The previous prime is 1378056061. The next prime is 1378056077. The reversal of 1378056066 is 6606508731.

It is a super-4 number, since 4×1378056066⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1378056061) 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, 841000 + ... + 842636.

It is an arithmetic number, because the mean of its divisors is an integer number (86786154).

Almost surely, 2^1378056066 is an apocalyptic number.

1378056066 is an abundant number, since it is smaller than the sum of its proper divisors (1399100862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378056066 is a wasteful number, since it uses less digits than its factorization.

1378056066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1378056066 is about 37122.1775492764. The cubic root of 1378056066 is about 1112.8132696199.

The spelling of 1378056066 in words is "one billion, three hundred seventy-eight million, fifty-six thousand, sixty-six".