1401463144 has 8 divisors (see below), whose sum is σ = 2627743410. Its totient is φ = 700731568.

The previous prime is 1401463121. The next prime is 1401463207. The reversal of 1401463144 is 4413641041.

It can be written as a sum of positive squares in only one way, i.e., 1181296900 + 220166244 = 34370^2 + 14838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87591439 + ... + 87591454.

Almost surely, 2^1401463144 is an apocalyptic number.

It is an amenable number.

1401463144 is a deficient number, since it is larger than the sum of its proper divisors (1226280266).

1401463144 is a wasteful number, since it uses less digits than its factorization.

1401463144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175182899 (or 175182895 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1401463144 is about 37436.1208460492. The cubic root of 1401463144 is about 1119.0785213993.

The spelling of 1401463144 in words is "one billion, four hundred one million, four hundred sixty-three thousand, one hundred forty-four".