1446138731 has 8 divisors (see below), whose sum is σ = 1512787104. Its totient is φ = 1379804800.

The previous prime is 1446138703. The next prime is 1446138763. The reversal of 1446138731 is 1378316441.

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 1446138731 - 2⁶ = 1446138667 is a prime.

It is a super-2 number, since 2×1446138731² = 4182634458596580722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1446138931) 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, 69176 + ... + 87621.

It is an arithmetic number, because the mean of its divisors is an integer number (189098388).

Almost surely, 2^1446138731 is an apocalyptic number.

1446138731 is a deficient number, since it is larger than the sum of its proper divisors (66648373).

1446138731 is a wasteful number, since it uses less digits than its factorization.

1446138731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157221.

The product of its digits is 48384, while the sum is 38.

The square root of 1446138731 is about 38028.1307849860. The cubic root of 1446138731 is about 1130.8456173317.

The spelling of 1446138731 in words is "one billion, four hundred forty-six million, one hundred thirty-eight thousand, seven hundred thirty-one".