1389654001 has 4 divisors (see below), whose sum is σ = 1471398372. Its totient is φ = 1307909632.

The previous prime is 1389653989. The next prime is 1389654017. The reversal of 1389654001 is 1004569831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 475196401 + 914457600 = 21799^2 + 30240^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389654001 - 2⁷ = 1389653873 is a prime.

It is a super-2 number, since 2×1389654001² = 3862276484990616002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389654401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40872160 + ... + 40872193.

It is an arithmetic number, because the mean of its divisors is an integer number (367849593).

Almost surely, 2^1389654001 is an apocalyptic number.

It is an amenable number.

1389654001 is a deficient number, since it is larger than the sum of its proper divisors (81744371).

1389654001 is an equidigital number, since it uses as much as digits as its factorization.

1389654001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81744370.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1389654001 is about 37278.0632678255. The cubic root of 1389654001 is about 1115.9264223640.

The spelling of 1389654001 in words is "one billion, three hundred eighty-nine million, six hundred fifty-four thousand, one".