1628297958 has 16 divisors (see below), whose sum is σ = 3721824000. Its totient is φ = 465227976.

The previous prime is 1628297953. The next prime is 1628297977. The reversal of 1628297958 is 8597928261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1628297898 and 1628297907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628297953) 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, 19384458 + ... + 19384541.

It is an arithmetic number, because the mean of its divisors is an integer number (232614000).

Almost surely, 2^1628297958 is an apocalyptic number.

1628297958 is an abundant number, since it is smaller than the sum of its proper divisors (2093526042).

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

1628297958 is a wasteful number, since it uses less digits than its factorization.

1628297958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38769011.

The product of its digits is 4354560, while the sum is 57.

The square root of 1628297958 is about 40352.1741421698. The cubic root of 1628297958 is about 1176.4621503147.

The spelling of 1628297958 in words is "one billion, six hundred twenty-eight million, two hundred ninety-seven thousand, nine hundred fifty-eight".