1461028638 has 16 divisors (see below), whose sum is σ = 2922515856. Its totient is φ = 486933120.

The previous prime is 1461028631. The next prime is 1461028649. The reversal of 1461028638 is 8368201641.

It is a super-2 number, since 2×1461028638² = 4269209362112270088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1461028596 and 1461028605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461028631) 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, 33420 + ... + 63552.

It is an arithmetic number, because the mean of its divisors is an integer number (182657241).

Almost surely, 2^1461028638 is an apocalyptic number.

1461028638 is an abundant number, since it is smaller than the sum of its proper divisors (1461487218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1461028638 is a wasteful number, since it uses less digits than its factorization.

1461028638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38219.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1461028638 is about 38223.4043224828. The cubic root of 1461028638 is about 1134.7135551220.

The spelling of 1461028638 in words is "one billion, four hundred sixty-one million, twenty-eight thousand, six hundred thirty-eight".