1651213242 has 64 divisors (see below), whose sum is σ = 4197580800. Its totient is φ = 471322800.

The previous prime is 1651213231. The next prime is 1651213253. The reversal of 1651213242 is 2423121561.

1651213242 is a `hidden beast` number, since 1 + 651 + 2 + 1 + 3 + 2 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1651213231) and next prime (1651213253).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736359 + ... + 738597.

It is an arithmetic number, because the mean of its divisors is an integer number (65587200).

Almost surely, 2^1651213242 is an apocalyptic number.

1651213242 is an abundant number, since it is smaller than the sum of its proper divisors (2546367558).

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

1651213242 is a wasteful number, since it uses less digits than its factorization.

1651213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208 (or 4202 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1651213242 is about 40635.1232556270. The cubic root of 1651213242 is about 1181.9553050687.

The spelling of 1651213242 in words is "one billion, six hundred fifty-one million, two hundred thirteen thousand, two hundred forty-two".