1368144474 has 16 divisors (see below), whose sum is σ = 2755976160. Its totient is φ = 452766960.

The previous prime is 1368144461. The next prime is 1368144497. The reversal of 1368144474 is 4744418631.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819397 + ... + 821064.

It is an arithmetic number, because the mean of its divisors is an integer number (172248510).

Almost surely, 2^1368144474 is an apocalyptic number.

1368144474 is an abundant number, since it is smaller than the sum of its proper divisors (1387831686).

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

1368144474 is a wasteful number, since it uses less digits than its factorization.

1368144474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640605.

The product of its digits is 258048, while the sum is 42.

The square root of 1368144474 is about 36988.4370310507. The cubic root of 1368144474 is about 1110.1388982909.

The spelling of 1368144474 in words is "one billion, three hundred sixty-eight million, one hundred forty-four thousand, four hundred seventy-four".