1656151003 has 4 divisors (see below), whose sum is σ = 1783547248. Its totient is φ = 1528754760.

The previous prime is 1656150997. The next prime is 1656151039. The reversal of 1656151003 is 3001516561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3001516561 = 41 ⋅73207721.

It is not a de Polignac number, because 1656151003 - 2⁹ = 1656150491 is a prime.

It is a super-2 number, since 2×1656151003² = 5485672289475812018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1656151303) 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, 63698103 + ... + 63698128.

It is an arithmetic number, because the mean of its divisors is an integer number (445886812).

Almost surely, 2^1656151003 is an apocalyptic number.

1656151003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1656151003 is a deficient number, since it is larger than the sum of its proper divisors (127396245).

1656151003 is a wasteful number, since it uses less digits than its factorization.

1656151003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127396244.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1656151003 is about 40695.8352046005. The cubic root of 1656151003 is about 1183.1322992128.

Adding to 1656151003 its reverse (3001516561), we get a palindrome (4657667564).

The spelling of 1656151003 in words is "one billion, six hundred fifty-six million, one hundred fifty-one thousand, three".