1657135043 has 8 divisors (see below), whose sum is σ = 1664190528. Its totient is φ = 1650089664.

The previous prime is 1657135037. The next prime is 1657135063. The reversal of 1657135043 is 3405317561.

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

It is a cyclic number.

It is not a de Polignac number, because 1657135043 - 2¹⁶ = 1657069507 is a prime.

It is a super-2 number, since 2×1657135043² = 5492193101477223698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1657134994 and 1657135012.

It is not an unprimeable number, because it can be changed into a prime (1657135013) 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, 668855 + ... + 671327.

It is an arithmetic number, because the mean of its divisors is an integer number (208023816).

Almost surely, 2^1657135043 is an apocalyptic number.

1657135043 is a deficient number, since it is larger than the sum of its proper divisors (7055485).

1657135043 is a wasteful number, since it uses less digits than its factorization.

1657135043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 1657135043 is about 40707.9235898860. The cubic root of 1657135043 is about 1183.3665811902.

The spelling of 1657135043 in words is "one billion, six hundred fifty-seven million, one hundred thirty-five thousand, forty-three".