1068947978 has 32 divisors (see below), whose sum is σ = 1874976768. Its totient is φ = 447534000.

The previous prime is 1068947963. The next prime is 1068947993. The reversal of 1068947978 is 8797498601.

It is an interprime number because it is at equal distance from previous prime (1068947963) and next prime (1068947993).

It is a super-2 number, since 2×1068947978² = 2285299559340576968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453503 + ... + 455853.

It is an arithmetic number, because the mean of its divisors is an integer number (58593024).

Almost surely, 2^1068947978 is an apocalyptic number.

1068947978 is a deficient number, since it is larger than the sum of its proper divisors (806028790).

1068947978 is a wasteful number, since it uses less digits than its factorization.

1068947978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 1068947978 is about 32694.7698875524. The cubic root of 1068947978 is about 1022.4738038454.

The spelling of 1068947978 in words is "one billion, sixty-eight million, nine hundred forty-seven thousand, nine hundred seventy-eight".