1651156428 has 48 divisors (see below), whose sum is σ = 3958980480. Its totient is φ = 535286400.

The previous prime is 1651156427. The next prime is 1651156439. The reversal of 1651156428 is 8246511561.

It is not an unprimeable number, because it can be changed into a prime (1651156427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157783 + ... + 167921.

It is an arithmetic number, because the mean of its divisors is an integer number (82478760).

Almost surely, 2^1651156428 is an apocalyptic number.

It is an amenable number.

1651156428 is an abundant number, since it is smaller than the sum of its proper divisors (2307824052).

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

1651156428 is a wasteful number, since it uses less digits than its factorization.

1651156428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518 (or 10516 counting only the distinct ones).

The product of its digits is 57600, while the sum is 39.

The square root of 1651156428 is about 40634.4241745838. The cubic root of 1651156428 is about 1181.9417488994.

Adding to 1651156428 its reverse (8246511561), we get a palindrome (9897667989).

The spelling of 1651156428 in words is "one billion, six hundred fifty-one million, one hundred fifty-six thousand, four hundred twenty-eight".