1651031485 has 4 divisors (see below), whose sum is σ = 1981237788. Its totient is φ = 1320825184.

The previous prime is 1651031477. The next prime is 1651031489. The reversal of 1651031485 is 5841301561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5841301561 = 53 ⋅110213237.

It can be written as a sum of positive squares in 2 ways, for example, as 616379929 + 1034651556 = 24827^2 + 32166^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651031485 - 2³ = 1651031477 is a prime.

It is a super-2 number, since 2×1651031485² = 5451809928922610450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1651031485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651031489) 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, 165103144 + ... + 165103153.

It is an arithmetic number, because the mean of its divisors is an integer number (495309447).

Almost surely, 2^1651031485 is an apocalyptic number.

It is an amenable number.

1651031485 is a deficient number, since it is larger than the sum of its proper divisors (330206303).

1651031485 is an equidigital number, since it uses as much as digits as its factorization.

1651031485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330206302.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1651031485 is about 40632.8867421452. The cubic root of 1651031485 is about 1181.9119356383.

The spelling of 1651031485 in words is "one billion, six hundred fifty-one million, thirty-one thousand, four hundred eighty-five".