1538642 has 8 divisors (see below), whose sum is σ = 2637696. Its totient is φ = 659412.

The previous prime is 1538633. The next prime is 1538657. The reversal of 1538642 is 2468351.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54938 + ... + 54965.

It is an arithmetic number, because the mean of its divisors is an integer number (329712).

2^1538642 is an apocalyptic number.

1538642 is a deficient number, since it is larger than the sum of its proper divisors (1099054).

1538642 is a wasteful number, since it uses less digits than its factorization.

1538642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109912.

The product of its digits is 5760, while the sum is 29.

The square root of 1538642 is about 1240.4200901308. The cubic root of 1538642 is about 115.4460809152.

The spelling of 1538642 in words is "one million, five hundred thirty-eight thousand, six hundred forty-two".