1501428643 has 8 divisors (see below), whose sum is σ = 1763916336. Its totient is φ = 1259940000.

The previous prime is 1501428623. The next prime is 1501428689. The reversal of 1501428643 is 3468241051.

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

It is a de Polignac number, because none of the positive numbers 2^k-1501428643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1501428599 and 1501428608.

It is not an unprimeable number, because it can be changed into a prime (1501428623) 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, 5249608 + ... + 5249893.

It is an arithmetic number, because the mean of its divisors is an integer number (220489542).

Almost surely, 2^1501428643 is an apocalyptic number.

1501428643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1501428643 is a deficient number, since it is larger than the sum of its proper divisors (262487693).

1501428643 is a wasteful number, since it uses less digits than its factorization.

1501428643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10499525.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1501428643 is about 38748.2727744089. The cubic root of 1501428643 is about 1145.0775467905.

Adding to 1501428643 its reverse (3468241051), we get a palindrome (4969669694).

The spelling of 1501428643 in words is "one billion, five hundred one million, four hundred twenty-eight thousand, six hundred forty-three".