1693979454 has 16 divisors (see below), whose sum is σ = 3434370192. Its totient is φ = 556924608.

The previous prime is 1693979449. The next prime is 1693979461. The reversal of 1693979454 is 4549793961.

It is a junction number, because it is equal to n+sod(n) for n = 1693979394 and 1693979403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933329 + ... + 1934204.

It is an arithmetic number, because the mean of its divisors is an integer number (214648137).

Almost surely, 2^1693979454 is an apocalyptic number.

1693979454 is an abundant number, since it is smaller than the sum of its proper divisors (1740390738).

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

1693979454 is a wasteful number, since it uses less digits than its factorization.

1693979454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867611.

The product of its digits is 7348320, while the sum is 57.

The square root of 1693979454 is about 41157.9816560531. The cubic root of 1693979454 is about 1192.0726194628.

The spelling of 1693979454 in words is "one billion, six hundred ninety-three million, nine hundred seventy-nine thousand, four hundred fifty-four".