1401189481 has 8 divisors (see below), whose sum is σ = 1405900800. Its totient is φ = 1396486560.

The previous prime is 1401189479. The next prime is 1401189499. The reversal of 1401189481 is 1849811041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1401189481 - 2¹ = 1401189479 is a prime.

It is a super-2 number, since 2×1401189481² = 3926663923330098722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401189481.

It is not an unprimeable number, because it can be changed into a prime (1401189421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539496 + ... + 542086.

It is an arithmetic number, because the mean of its divisors is an integer number (175737600).

Almost surely, 2^1401189481 is an apocalyptic number.

It is an amenable number.

1401189481 is a deficient number, since it is larger than the sum of its proper divisors (4711319).

1401189481 is a wasteful number, since it uses less digits than its factorization.

1401189481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1401189481 is about 37432.4656014001. The cubic root of 1401189481 is about 1119.0056760251.

The spelling of 1401189481 in words is "one billion, four hundred one million, one hundred eighty-nine thousand, four hundred eighty-one".